Chinese Wholesale Line Pipe - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral

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Chinese Wholesale Line Pipe - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral Detail:

Mechanical Property

Grade A Grade B Grade C Grade D Grade E
Yield strength, min, Mpa(KSI) 330(48) 415(60) 415(60) 415(60) 445(66)
Tensile strength, min, Mpa(KSI) 205(30) 240(35) 290(42) 315(46) 360(52)

Chemical Composition

Element

Composition, Max, %

Grade A

Grade B

Grade C

Grade D

Grade E

Carbon

0.25

0.26

0.28

0.30

0.30

Manganese

1.00

1.00

1.20

1.30

1.40

Phosphorus

0.035

0.035

0.035

0.035

0.035

Sulfur

0.035

0.035

0.035

0.035

0.035

Hydrostatic Test

Each length of pipe shall be tested by the manufacturer to a hydrostatic pressure that will produce in the pipe wall a stress of not less than 60% of the specified minimum yield strength at room temperature. The pressure shall be determined by the following equation:
P=2St/D

Permissible Variations In Weights and Dimensions

Each length of pipe shall be weighed separately and its weight shall not vary more than 10% over or 5.5% under its theoretical weight, calculated using its length and its weight per unit length.
The outside diameter shall not vary more than ±1% from the specified nominal outside diameter.
Wall thickness at any point shall not more than 12.5% under the specified wall thickness.

Length

Single random lengths: 16 to 25ft(4.88 to 7.62m)
Double random lengths: over 25ft to 35ft(7.62 to 10.67m)
Uniform lengths: permissible variation ±1in

Ends

Pipe piles shall be furnished with plain ends, and the burrs at the ends shall be removed
When the pipe end specified to be bevel ends, the angle shall be 30 to 35 degree


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Chinese Wholesale Line Pipe - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral detail pictures

Chinese Wholesale Line Pipe - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral detail pictures


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We believe in: Innovation is our soul and spirit. Quality is our life. Shopper need is our God for Chinese Wholesale Line Pipe - Helical-seam carbon steel pipes ASTM A139 Grade A, B, C – Spiral , The product will supply to all over the world, such as: USA, Sacramento, Madras, We are sticking to excellent quality, competitive price and punctual delivery and better service, and sincerely hope to establish long-term good relationships and cooperation with our new and old business partners from all over the world. Sincerely welcome you to join us.
  • This is a reputable company, they have a high level of business management, good quality product and service, every cooperation is assured and delighted!
    5 Stars By Debby from New Zealand - 2018.12.10 19:03
    The goods are very perfect and the company sales manager is warmful, we will come to this company to purchase next time.
    5 Stars By Johnny from Costa rica - 2017.06.19 13:51
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