ASTM A250 ERW Welded Tubes

OD:12.7 to 127 mm
WT:0.9 to 8.1 mm
Grade:ASTM A250 T1,T1a,T1b,T2,T11,T12,T22
Schedules:20,30,40,Standard (STD),Extra Heavy (XS),80,100,120,140,160,XXS & heavier
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Product Details

ASTM A250 ERW Welded Tubes are used to transport petroleum, natural gas and other vapor and liquid objects, which can meet various requirements of high and low pressure. Currently, they occupy a pivotal position in the field of transportation pipes in the world.

OD: 12.7 to 127 mm

WT: 0.9 to 8.1 mm

Grade: ASTM A250 T1, T1a, T1b, T2, T11, T12, T22

Schedules: 20, 30, 40, Standard (STD), Extra Heavy (XS), 80, 100, 120, 140, 160, XXS & Heavier 

Package: hexagonal bundled or loose packing

Chemical composition

Grade

Mfg. Process

Chemical composition(%)

C

Si

Mn

P

S

Ni

Cr

Mo

Others

T1

E

0.10~0.20

0.10~0.50

0.30~0.80

0.045Max

0.045Max

-

-

0.44~0.65

-

T1a

E

0.15`0.25

0.10~0.50

0.30~0.80

0.045Max

0.045Max

-

-

0.44~0.65

-

T1b

E

0.14Max

0.10~0.50

0.30~0.80

0.045Max

0.045Max

-

-

0.44~0.65

-

T2

E

0.10~0.20

0.10~0.50

0.30~0.81

0.030Max

0.020Max

-

0.50~0.81

0.44~0.65

-

T11

E

0.05~0.15

0.10~0.50

0.30~0.60

0.030Max

0.020Max

-

0.80~1.25

0.44~0.65

-

T12

E

0.05~1.15

0.50Max

0.30~0.61

0.030Max

0.020Max

-

0.80~1.25

0.44~0.65

-

T22

E

0.15Max

0.50Max

0.30~0.60

0.030Max

0.020Max

-

1.90~2.60

0.87~1.13

-

Mechanical Properties 

Grade

Tensile Test MPa or N/mm2

Remaks (Similar to JIS)

Possibility Temperature

Min Yield point

Tensile Strength

T1

205

380Min

(STBA12)


T1a

220

415Min

(STBA13)


T1b

195

365Min

-


T2

205

415Min

-


T11

205

415Min

-


T12

205

415Min

-


T22

205

415Min

-


ASTM A250 ERW Welded Tubes are mainly used in water supply engineering, petrochemical industry, chemical industry, power industry, agricultural irrigation, and urban construction. For liquid transportation: water supply and drainage. For gas transportation: coal gas, steam, liquefied petroleum gas. For structural purposes: as piling pipes and bridges; pipes for docks, roads, and building structures.

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