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Rolf Engg. Solutions Inc. supply and manufacture Stainless, Alloy and Carbon Steels.

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SS pipe grades.

A249/ A249M A269 A270 A778 A335/ A335M A691
A790 A312 A409 A554 A358/ A358M A928/ A928M


CS pipe Grades

A 106 A53 API5L A671 A672

API 5L Mechnical Properties :

PLS-1 Grade A Grade B Grade X 42 Grade X 46 Grade X 52 GradeX56 GradeX60
Yield Strength (Min) 210 Mpa 245 Mpa 290 Mpa 320Mpa 360Mpa 390 Mpa 415 Mpa
Tensile Strength (Min) 335 Mpa 415Mpa 415Mpa 435Mpa 460Mpa 490 Mpa 520 Mpa
Elongation
As  Per  API  5L


Chemical Properties :

PSL-1 Carbon Maganese Phosphorus Sulphur V Nb TITANIUM
Grade A 0.22 0.90 0.03 0.03 _ _ _
Grade B 0.26 1.20 0.03 0.03 c,d c,d d
Grade X 42 0.26 1.30 0.03 0.03 d d d
Grade X 46 0.26 1.40 0.03 0.03 d d d
Grade X 52 0.26 1.40 0.03 0.03 d d d
Grade X 56 0.26 1.40 0.03 0.03 d d d
Grade X 60 0.26 1.40 0.03 0.03 f f f

C=(Nb+v)< 0.06%
D=(Nb+V+Ti)<0.15%
f=Unless otherwise agreed (Nb+V+Ti) < 0.15%

Composition max %

PSL - 2 C Mn P S Si V Nb Ti
Grade B 0.22 1.2 0.25 0.15 0.45 0.05 0.05 0.04
Grade x 42 0.22 1.3 0.25 0.15 0.45 0.05 0.05 0.04
Grade x 46 0.22 1.3 0.25 0.15 0.45 0.05 0.05 0.04
Grade x 52 0.22 1.4 0.25 0.15 0.45 d d d
Grade x 56 0.22 1.4 0.25 0.15 0.45 d d d
Grade x 60 0.12 1.6 0.25 0.15 0.45 g g g

C=(Nb+v)< 0.06%
D=(Nb+V+Ti)<0.15%
g =Unless otherwise agreed (Nb+V+Ti) < 0.15%

Destructive & Non – Destructive Testing

Hydrostatic         100% of pipe shall be tested at a pressure specified in above specification.
PSL – 1 ( NDT )    Weld seam of each pipe shall be tested by online Eddy Current Test.
PSL – 2 ( NDT )    Steel skelp and weld seam shall be tested by Ultrasonic Test ( after hydro test )
Flattentig             1- Flatten upto ½ of OD ( no crack in weld )
                              2- Flatten upto 1/3  of OD ( no crack or breaks other than in weld )
                              3- Full Flattening ( No Lamination or Burnt Metal )

Line Pipe Physical Properties

API 5L Grade Yield Strength
min.
(ksi)
Tensile Strength
min.
(ksi)
Yield to Tensile Ratio
(max.)
Elongation
min.
%1
A 30 48 0.93 28
B 35 60 0.93 23
X42 42 60 0.93 23
X46 46 63 0.93 22
X52 52 66 0.93 21
X56 56 71 0.93 19
X60 60 75 0.93 19
X65 65 77 0.93 18
X70 70 82 0.93 17
X80 80 90 0.93 16

1 -API 5L elongation figures vary with specimen dimensions. Values shown for 0.2 sq. in. specimen.