MITPS-DongHO_Rev01_29 01 2014.Pdfb 11

of 19

WELSPUN

FORMAT NO QA/F/013

DOCUMENT NO MITPS/KSA/14-15/001

REV NO 01

DATE 29.01.2014

QUALITY ASSURANCE PAGE NO 1 OF 19

DOCUMENT MANUFACTURING INSPECTION TESTING PROCEDURE SPECIFICATION

Manufacturing Plant : Spiral 1, 2 & 3

PROJECT : RIYADH STRATEGIC WATER SUPPLY SCHEME

PIPE GRADE : API – 5L, Grade X52M PSL2

OFFER REFERANCE / P.O NUMBER : DK20140000000000033 DTD: 18/01/2014

PROJECT SPECIFICATION : Specification M01 ( steel pipe for main lines ) QC10-H-041 Rev- 3, [M01] Dated 27.09.2013

PIPE MANUFACTURING SPECIFICATION :

Helical Seam Submerged Arc Welded (SAWH) Line Pipes As Per

Customer Specification(M01) QC 10-H-041 Rev 3, Dated 27.09.2013 & API 5L 45th Edition effective from July

2013

DELIVERY CONDITION

SERVICE CONDITION

PIPE SIZE

ITEM

NO.

PIPE SPECIFIEDOUTSIDE

DIAMETER

WALL THICKNESS Grade QTY.

INCH(MM) INCH MM METERS

1 56” (1422.4) 0.375” 9.53 X52M As per PO

Revision Record

Revision Description Date Prepared By Checked Approved

0 Issued for Approval 21-01-2014 Waleed. Mohammed Maltesh Patil D. P. Singh Client

01 Client Comments 29-01-2014 Waleed. Mohammed Maltesh Patil D. P. Singh Client

ahmedmahmoud

Stamp

WELSPUN FORMAT NO QA/F/013


QUALITY ASSURANCE REV NO 01

DATE 29.01.2014

PAGE NO 2 OF 19


Sr.

No. Work Description

Ref. Standard /

Specification

Testing

Frequency Acceptance Criteria Documents

Inspection Stage WMEP TPI

(A) Scope

Client Specification

M01 clause 1 & API

5L clause 1

-------- Carbon steel SAWH, class 1, Non sour pipes as per API 5L &

Customer Specification M01 -------- -------- --------

1.0 Steel (Coils)

Client Specification

M01 Clause 4.1 &

API 5L clause 8.3

100% coils API 5L Grade X52M PSL 2 coils as per clause no. 8.3 of API

5L. Coil Mill TC R R

1.1 Coil Procurement

& Inspection API 5L clause 8.3.4 Each coil As per RMTDS & API 5L clause 8.3.4 Mill report H M

1.2 Edge milling Std. Procedure / WPS Each coil Each longitudinal edge max 10.0 mm each side & root and

bevel as per approved WPS Insp. report H M

1.3 Pipe forming API 5L Table 2 Each pipe As per mill procedure, forming angle shall be confirmed at

the time of PQT. Mill report H M

2.0 Welding including

skelp end joints

Client Spec.M01

clause 4.2.3 & 4.2.5

& API 5L clause

8.10.2 & 8.10.4 &

ASME SEC. IX

Each coil

As per approved welding procedures

A separate welding procedure shall be qualified for skelp end

welds.

Prod. Report H M

3.0 WPS/PQR/WPQ ASME SEC IX &

API 5L.

Each Wall

thickness/

Grade/Diameter

ASME SEC. IX / API 5L Annex – C & D. Weld procedure

for SAW & repair weld as per approved WPS. WPS/PQR/ WPQ H W/R

3.1

Automatic

submerged arc

welding

ASME section IX &

API 5L clause 8.6 &

8.10

Each pipe Current, voltage, speed, wire & flux. Shall be controlled &

monitored as per approved PQR Welding report H M




DATE 29.01.2014

PAGE NO 3 OF 19


Sr.


Ref. Standard /

Specification

Testing



3.2 Continuous tack

welding (if done)

ASME section IX &

API 5L clause 8.4 Each pipe As per approved WPS & as per clause no 8.4 of API 5L. Welding report H M

3.3 Visual inspection

(Preliminary)

Client Spec.M01

clause 5.2 & (Clause

10.2.7 & 9.10.7of

API 5L.)

Each pipe

All pipes shall be visually examined both externally and

internally and shall be free of defects. Acceptance as per API

5L

Pre- visual report H RW

4.0 Fluoroscopy

(Internal)

Clause E.4 of API

5L. Each Pipe

As per API 5L. Clause. E.4.5, clause. E.4.6 & as per

approved WI for X-Ray ----- H -----

5.0

Hydrostatic test

(95% OF SMYS)

As per client

specification M01

clause 5.3.2 A(2)

Each pipe

Pipe shall be tested at following test pressures & the holding

time shall be 10 seconds

Item

no.

Pipe OD

(Inch)

WT

(mm)

Grade

Pressure

(min)

BAR

1 56”

(1422.4 ) 9.53

X52M 47

Calibration of the pressure gauges shall be carried out at start

of production further to a frequency of at least once per week.

Graph chart

showing pressure &

holding time for

each pipe and test

report

H RW

Non destructive

Testing




DATE 29.01.2014

PAGE NO 4 OF 19


Sr.


Ref. Standard /

Specification

Testing



6.0 X-Ray Inspection

Clause E.3.2.2 of API

5L & As per client

specification M01

Clause 5.3.2 A.3 &

5.3.2 A.5

Each Pipe Ends As per API 5L clause. E.4.5, clause. E.4.6 & as per WI for X-

Ray

X-Ray report &

radiographs H R

6.1 Each pipe both

ends up to 250 mm


5L & As per client

specification M01

Clause 5.3.2 A.4.

Each Pipe ends Both ends of pipe up to a distance of 250 mm, acceptance as

per clause no. E 4.5 & E 4.6 of API 5L.

X-Ray report &

radiographs H R

6.2 RSO / RSI ----- If any All restart spots shall be x-ray checked, acceptance as per

clause no. E 4.5 & E 4.6 of API 5L

X-Ray report &

radiographs H R

6.3 T-joints of skelp

ends

Clause E.3.1.1 of

API 5L, Table E1 &

As per client

specification M01

clause 5.3.2 A.5

If any All T-Joints of skelp end welds with extent of 150 mm in

each direction of “T” Joint shall be inspected by X-ray

X-Ray report &

radiographs H R

7.0

UT calibration

standard


5L.

Twice per

operating shift,

with second

calibration at

interval of 4 hrs.

As per clause no. E.5.2 & E.5.3 of API 5L. Cal. Report / graph H RW




DATE 29.01.2014

PAGE NO 5 OF 19


Sr.


Ref. Standard /

Specification

Testing



8.1

Weld Seam

Ultrasonic Testing

(AUTO UT)

Clause E.3.1 Table

E1 & 3.2.3 of API

5L

100% weld seam

of each pipe

including 25mm

near weld seam

(except untested

length)

All indications producing signals higher than the acceptance

limits of reference standard & API 5L shall be MUT checked.

Lack of Penetration Not Accepted >100 mm in weld.

Acceptance as per API 5L & WI for Auto UT.

UT report H W

8.2

Coil UT

Clause E.9 & E.3.2.3

of API 5L

Each Coil

For Body: Acceptance Level U1 of ISO 10893-9 2011

For edge: Acceptance Level U1(Table2) of ISO 10893-8 2011

over a zone of 25mm

Coil UT report H W

8.3

Manual ultrasonic

testing for weld &

body


5L & As per client

specification M01

clause 5.3.2 A.3

Each Pipe As per client specification M01 & API 5L Acceptance as per

API 5L & WI for MUT MUT report H W

a)

Each pipe End

untested weld

length from Auto

UT & Auto UT

indications

API 5L clause

E.3.2.1 Each Pipe Acceptance as per API 5L & WI for MUT. MUT report H

W

b)

MUT of 25 mm

from the beveled

ends of pipe

circumference

As per client

specification M01

clause A.3 Each Pipe ends In accordance with Annex E.3.2.3 & Approved WI for MUT. UT report H W




DATE 29.01.2014

PAGE NO 6 OF 19


Sr.


Ref. Standard /

Specification

Testing



c) Skelp Joint Clause E.3.1.1 of

API 5L Table E1 Skelp weld 100%

The complete strip end weld shall be subjected to manual

ultrasonic testing.

Acceptance as per API 5L.

MUT report H W

9.0 Indication from

MUT

Clause E. 3.2.2 of

API 5L. If any

All indication from MUT shall be confirmed by X-ray,

acceptance as per clause no. E 4.5 & E 4.6 of API 5L. X-Ray report H R

9.1 Weld Repair areas

Clause C.4.6 of API

5L & As per client

specification M01

clause 5.4.2

If any All weld repaired areas shall be inspected by UT and X-ray X-Ray report H R

10.0

Residual

Magnetism

(if MPI is carried

out)

Clause E.7 & E.7.6 of

API 5L.

Each end of pipe

selected once per

4 hours

The average of the four reading shall not exceed 30 gauss and

no one reading shall not exceed 35 gauss Test Report H RW

11.0

Workmanship,

Visual Inspection

and Repair of

Defects

11.1 Visual Inspection

Clause 10.2.7 of API

5L & As per client

specification M01

Clause no.5.3.3

(Visual Inspection )

Each pipe inside

& outside Pipe shall be visually inspected from ID and OD

Visual &

dimensional Report H RW




DATE 29.01.2014

PAGE NO 7 OF 19


Sr.


Ref. Standard /

Specification

Testing



11.2 Dents

As per client

specification M01

Clause no. 5.3.3.

Visual Inspection

Point 5

If any

Dents shall not exceed 6mm, nor shall they extent in any

direction over a distance longer than ¼ of pipe Diameter.

Dent containing creases, sharp edged imperfections or gouges

shall be considered as Defects.

Visual &


11.3 Radial Offset of

edges

As per client

specification M01

Clause 5.3.3 Visual

Inspection Point 3

Each pipe &

maintain record 3

pipe /shift

Max. 1.6mm Visual &


11.4 Misalignment of

weld beads

As per client

specification M01

Clause 5.3.3 Visual

Inspection Point 2 &

9.13.3 OF API 5L

Once/shift

Maximum 3.0mm Macro Reports

H

RW

11.5

Height of weld

bead (inside &

outside)


5L & As per client

specification M01

Clause 5.3.3 Visual

Inspection Point 7

Each pipe &

record

3pipes/shift

Maximum 3.0 mm at ID & OD Visual & dimensional

report H RW

11.6 Cracks & leaks


5L & As per client

specification M01

Clause 5.3.3 Visual

Inspection Point 4

If any

All pipes shall be free from defects in the finished condition.

All pipes shall be free from cracks and leaks. Cracks shall not

be repaired.

The acceptance criteria for imperfections found by NDI shall

be in accordance with annex E of API 5L

------- H RW




DATE 29.01.2014

PAGE NO 8 OF 19


Sr.


Ref. Standard /

Specification

Testing



11.7 Undercuts


5L & As per client

specification M01

Clause 5.3.3 Visual

Inspection Point 5

If any

Undercuts that have a depth < 0.4 mm are acceptable

regardless of length, and shall be treated in accordance with

clause C.1 of API 5L

Undercuts that have a depth > 0.4 mm but < 0.8 mm are

acceptable, provided that

1. Their individual lengths are < 0.5t, and

2. Their individual depths are < 0.1t, and

3. there are no more than two such undercuts in any

300 mm length of weld, and

4. All such undercuts are treated in accordance with

clause C.2 API 5L.

The undercuts that exceed the limits specified in item b) shall

be classified as defects and shall be treated in accordance with

clause C.3 of API 5L.

Visual &

dimensional report H RW

11.8

Inside & outside

weld bead grinding

(End flushing)

Clause 9.13.2.2 of

API 5L & per client

specification M01

clause 5.3.3.9

Each pipe Weld reinforcement shall be removed Up to 150mm

externally & 150mm internally at both ends of the pipe.

Visual &


11.9 Hard spots(if any) Clause 9.10.6 &

10.2.4.8 of API 5L If any

Any hard spot larger than 50 mm (2.0 in) in any direction

shall be classified as a defect if its hardness exceeds 35 HRC,

345 HV10 or 327 HBW, based upon individual indentations.

Pipes that contain such defects shall be treated in accordance

with C.3 b) or C.3 c).

Visual report H RW




DATE 29.01.2014

PAGE NO 9 OF 19


Sr.


Ref. Standard /

Specification

Testing



11.1

0 Laminations

As per client

specification M01

clause 5.3.3.non

destructive test clause

1.

If any No Lamination accepted within 25 mm circumference of pipe

ends. Visual report H RW

11.1

1 Arc burns


5L If any

Arc burns shall be treated in accordance with Clause-C.2,

C.3(b) OR C.3(c) except that they may be removed by

chipping or machining, and Grinding provided that the

resultant cavity is thoroughly cleaned and checked for

complete removal of damage material by etching with 10%

solution of ammonium per sulfate or a 5%solution of natal.

Visual report H RW

11.1

2

Other defects

(Geometric

Deviations &

Scratch Mark)

API 5L clause

9.10.5, 9.10.7 If any Other Geometric deviations as per API 5L clause 9.10.5.1 Visual report H RW

11.1

3

Skelp end welds in

finished pipes

API 5L 8.10 or As

per client

specification M01

clause 4.2.3

If any

For finished helical seam pipes the junction of the strip end

welds and helical-seam welds shall be at least 500 mm from

the pipe ends.

Visual &


11.1

4 Peaking

API 5L clause

9.10.5.1 & As per

client spec. M01

clause 5.3.3(Visual

Inspection 6)

If any Max 1.5mm Visual &





DATE 29.01.2014

PAGE NO 10 OF 19


Sr.


Ref. Standard /

Specification

Testing



12

DIMENSIONS,

WEIGHTS &

LENGTHS

12.1 Wall thickness

As per client spec.

M01 clause 5.3.3

Dimensional

Tolerances point no 6

Each pipe

The negative tolerance shall be max. -0.5 mm. The positive

tolerance shall be max. + 1.5 mm.

Min 9.03 mm

Max 11.03 mm

Visual &


12.2 Pipe length

As per client

specification M01

Clause 5.3.3.7

Each pipe

shall be supplied in following length

Min Length – 12.00 meters

Max Length – 18.00 meters

Min AVG Length – 15.00 meters

Visual &


12.3 Straightness Clause 9.11.3.4 of

API 5L

Each pipe

Total deviation from straight line for all pipes shall not exceed

0.2% of the pipe length & 4.0 mm max for a distance of 1000

mm from the extreme pipe ends.

Visual &


12.4

.

Outside diameter at

pipe body

(measured with pie

tape & recorded)

As per client

specification M01

Cause 5.3.3 of 3

Each pipe

OD = + 3.00 mm max.

Min 1419.4 mm to Max 1425.4 mm

Visual &





DATE 29.01.2014

PAGE NO 11 OF 19


Sr.


Ref. Standard /

Specification

Testing



12.5

Internal diameter at

the pipe end over a

length of 100 mm

As per client

specification M01

Cause 5.3.3 of 2 &

API 5L Clause

9.11.3.1 Table-10

Each pipe

+ / - 1.6mm

Min 1401.74 mm to Max 1404.94 mm

Visual &


12.6 Out of roundness

12.6

.1 At Pipe Ends

As per client

specification M01

Cause 5.3.3.4 & API

5L Table 10

Each pipe &

record 3 pipes/

shift

Max 13.00 mm

Visual &


12.6

.2

At other than ends

(Body)

As per client

specification M01

Cause 5.3.3.4 & API

5L Table 10

Each pipe &

record 3 pipes/

shift

Max 15.00 mm

Visual &


12.7 Weight Clause 9.14.1 of API

5L Each pipe + 10% & - 3.5 % of nominal weight

Visual &

dimensional Report H M

12.8 Pipe Ends & End

Protectors

12.8

.1

Bevel angle & root

face

As per client

specification M01

Clause 5.3.3.9

Each pipe Bevel angle. 30° (+5°, -0°)

Root face 1.6 mm (± 0.8 mm)

Visual &





DATE 29.01.2014

PAGE NO 12 OF 19


Sr.


Ref. Standard /

Specification

Testing



12.8

.2 End Squareness

As per client

specification M01

Clause 5.3.3.9

At least 3 pipes

per shift Squareness ≤1.6 mm

Visual &


13 Bevel protectors ------- Each pipe Metallic bevel end protector shall be provided at both ends. ------- H M

14

Repair

prohibition &

procedure

14.1 Repair procedure

As per client

specification M01

clause 5.4.2 & API

5L

If any As per approved WPS & PQR Approved WPS &

PQR H H




DATE 29.01.2014

PAGE NO 13 OF 19


Sr.


Ref. Standard /

Specification

Testing



14.2 Repair Prohibition

API 5L & As per

client specification

M01 clause 5.4.2

If any

Following requirements shall also be complied with for repair

welding

The total length of repaired zone on each pipe weld

shall be < 4% of the total length of weld.

Weld defect separated by less than 100 mm shall be

repaired as a continuous single repair.

Each single repair shall be carried out with a

minimum of two layers/passes over a length of at

least 50 mm.

If Repaired after Hydro Testing the pipe shall be re-

hydro tested after repair.

Weld repair shall be performed using a qualified

WPS.

After weld repair, the total area of the repair shall be

radiographically& ultrasonically inspected in

accordance with Annex E of API 5L.

Through thickness & Crack repair is not allowed.

For coil/plate end welds, the total length of the

repaired zone shall not exceed 100 mm (4.0 in) and

shall not be within 100 mm (4.0 in) of the junction

between the end weld and the helical seam weld.

Repeated repair at the same spot are not allowed.

Repair by welding on base material is not

Permitted.

Repair By Grinding may be applied as per API 5L

provided the remaining wall thickness is not less than 0.1

of the nominal wall thickness.

Rectification report /

approved WPS &

PQR

H RW

15.0

Test report &

certification of

pipes

API 5L clause 13 Each pipe All documents as per API 5L Insp. & test reports H R




DATE 29.01.2014

PAGE NO 14 OF 19


Sr.


Ref. Standard /

Specification

Testing



16.0 Marking on

finished pipe

clause 11.2.1 of API

5L

Each pipe one

End

Marking shall be on the inside surface of the pipe, starting of

a point at least 150 mm from one of the pipe ends and include

the following information, as applicable.

1. Name or mark of the manufacturer.

2. Specified outside diameter.

3. Specified wall thickness.

4. Pipe steel grade.

5. Product specification level designation.

6. Type of pipes. (Table 2 of API 5L )

7. Mark of customer‟s inspection representative if

applicable.

8. An identification number which permits the

correlation of the product or delivery unit with the

related inspection documents, if applicable.

9. For specified outside diameter marking in USG or SI

unit, it is not necessary to include the ending zero

digit to the right of the decimal sing.

The area of the pipe to be marked shall be clean and dry The

size of the lettering shall be 20 mm. Pipe number shall be

stamped on bevel

Pipe number shall be stamped on bevel end.

------- H M




DATE 29.01.2014

PAGE NO 15 OF 19


Sr.


Ref. Standard /

Specification

Testing



(B) PRODUCTION

TESTS

B.1

Chemical analysis

(Product – Base

Metal)

Table 18 of API 5L

10.2.4.1 2 pipes / heat All elements as per Annexure – A of this MITPS

Chemical test report

H H

B.2 Mechanical Tests

B.2.

1

Transverse tensile

test (Base Metal)

API 5L clause 9.3.2,

10.2.3.2, 10.2.4.2,

Table 7 &18

Once / test unit

Tthe tensile properties shall be given in Table 7.

The tensile test shall be carried out in accordance with ISO

6892 or ASTM A370.

For pipe body tests, the yield strength, the yield ratio and the

percentage elongation after fracture shall be determined.

The percentage elongation after fracture shall be reported with

reference to a gauge length of 50 mm (2 in.). For test pieces

having a gauge length less than 50 mm (2 in.), the measured

elongation after fracture shall be converted to a elongation in

50 mm (2 in.) in accordance with ISO 2566 or ASTM A 370.

Test pieces for tensile test as per clause 10.2.3.2.

Mech. Test report H H

B.2.

2

(a)

Transverse tensile

test -Helical Weld

Seam

API 5L Table 18 Once / test unit

(The samples shall be taken in such a way that

the testing frequencies of API including weekly

weld tensile test per welding line is

complied)

Mech. Test report H H




DATE 29.01.2014

PAGE NO 16 OF 19


Sr.


Ref. Standard /

Specification

Testing



B.2.

3

(a)

Guided bend test

Helical Weld Seam API 5L Table 18 Once / test unit

One face and one root face bend weld test shall be made on

samples cut from pipe.

The dimension „A‟ in guided bend test shall not be exceed 4

times of the specimen thickness

Acceptance criteria shall be as per API 5L

Mech. Test report

H H

B.2.

4

CVN Impact

Helical Weld Seam

& Pipe Body

API 5L Table 18 Once / test unit

Full size specimen as applicable shall be used

Acceptance shall be As per API 5L table 8

Test Report H H

B.2.

5

Hardness test

Helical Weld Seam API 5L Table 18

Any Hard spots

exceeding 50mm

in any direction(if

any)

Max.300 HB Test report H H

B.2.

6

Macro graphic

examination of

Helical Weld Seam


5L 1 pipe / shift

The alignment of internal and external seams shall be verified

as per figure d of API 5L Test report H H

B

2.7

Skelp Weld –

Tensile, Charpy

and guided bend

API 5L clause 9.3.2,

10.2.3.2, 10.2.4.2,

Table 7 &18

Once per Lot of

50 skelp weld

pipes

Refer B 2.2,2.3,2.4,2.5 & 2.6 acceptance criteria Test report H H

B.3 Retesting &

rejection criteria API 5L If any As per clause 10.2.12.1 of API 5L Test report H

RW




DATE 29.01.2014

PAGE NO 17 OF 19


Sr.


Ref. Standard /

Specification

Testing



C FIRST DAY PRODUCTION TEST (ONE PIPE OF COMPLETELY FINISHED PIPE OF FIRST DAY’S PRODUCTION ) As per client specification M01 4.2.4 & 4.2.5

C.1 Hydrostatic test

As per client

specification M01

clause 5.3.2 A(2)

PQT pipe As per clause. 5 of this MITPS MPQT report H H

C.2

Automatic &

manual

Ultrasonic testing

(Weld and Body)

Clause E.3.1 & Table

E1 of API 5L PQT pipe

Complete weld length shall be UT tested as per clause. 8.1,

8.2 & 8.3 OF this MITPS

MPQT report

H H

C.3

Radiographic

testing of weld

seam

As per Client

specification M01

Clause 5.3.2 A3

PQT Pipe –

Fluoroscopy

Entire weld length

As per clause 6.0 of this MITPS MPQT report H R

C.4

Visual &

dimensional

examination

API 5L & As per

client specification

M01 Clause 5.3.1

PQT pipe

Pipe shall be examined visually for dimensional tolerance and

apparent surface defects As per clause 11.0 & 12.0 of this

MITPS

MPQT report

H

H

C.5

Chemical analysis

(Product-Base &

Weld)

API 5L PQT pipe (1

samples/ pipe)

All elements as per Annex. A of this MITPS for Base and as

per approved WPS for Weld MPQT report

H R

C.6 Mechanical tests

C.6.

1

Transverse Base

Tensile API 5L PQT pipe As per API 5L table 7 MPQT report H H




DATE 29.01.2014

PAGE NO 18 OF 19


Sr.


Ref. Standard /

Specification

Testing



C.6.

2

Transverse Weld

Tensile API 5L As per API 5L table 7 MPQT report H H

C.6.

3 Guided bend test API 5L PQT pipe

In accordance with clause no. 10.2.4.6, 10.2.3.6 & table 23 of

API 5L.

Acceptance as per Clause 9.7.1 of API 5L

MPQT report H H

C.6.

4

CVN Impact

Pipe Body, Weld

& HAZ

API 5L PQT pipe

CVN impact for base, weld and HAZ at Test Temperature,

Zero Degree C shall be done and the acceptance for full size

specimen shall be as per API 5L Table 8.

Additionally Transition curve shall be established by testing

at following Test temperatures, -40°C,-20°C, 0°C, 20°C &

60° C, for Each Location. The transition curve will be plotted.

This is for information only and no acceptance criterion is

stated.

MPQT report H H

C.6.

5

CVN Impact of

Skelp end welds

(Weld and HAZ)

API 5L PQT PIPE

Test temperature =0°C

Acceptance for full size specimen shall be :

As per API 5L table 8

Test Report H W

C.6.

6

Guided bend test

of

Strip end weld

(Root & face)

API 5L 1 set from skelp

In accordance with clause no. 10.2.4.6, 10.2.3.6 & table 23 of

API 5L.

Acceptance as per Clause 9.7.1 of API 5L

Mech. Test report

H W

C.6.

7

Transverse tensile

test (Strip end

weld)

API 5L 1 skelp end weld As per API 5L table 7

Mech. Test report H

W




DATE 29.01.2014

PAGE NO 19 OF 19


Sr.


Ref. Standard /

Specification

Testing



C.6.

8

Macro graphic

examination of

Helical & Skelp

end welds

API 5L PQT pipe The alignment of internal and external seams shall be verified

as per figure d of API 5L MPQT report H W

LEGENDS: H- HOLD, W- WITNESS, M- MONITER, R- REVIEW, RW = RANDOM WITNESS, TPI-THIRD PARTY INSPECTION AGENCY, FDPT – FIRST DAY PRODUCTION TEST,WI-

WORK INSTRUCTION

ANNEXURE – A

ELEMENT MAX. % ALLOWED

ELEMENT MAX. % ALLOWED

Notes:

1) For each reduction of 0,01 % below the specified maximum for C,

an increase of 0,05 % above the specified maximum for Mn is

permissible, up to a maximum of 1,65 % for grades ≥ L245 or B, but

≤ L360 or X52

2) CE (Pcm)= C + Si/30 + (Mn+Cu+Cr) / 20 + Ni/60 +Mo/15+ V/10

+5B

3) CE (IIW)= C + Mn/6 + (Cr+Mo+V)/5 + (Ni+Cu)/15,

d) The sum of the niobium, vanadium and titanium concentration

shall be ≤ 0.15%.

X52M X52M

C 0.20 CE(IIW) 0.43%

Mn 1.40

Si 0.45

P 0.025

S 0.010

Cr 0.30

Cu 0.50

Mo 0.15

Ni 0.30

MITPS-DongHO_Rev01_29 01 2014.Pdfb 11

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