About Us

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  Dear Sir ?
  Tianjin Longshenghua Import & Export Co .,Ltd manufacture of seamless steel pipe (www.longshenghua.com) in China. We find you are a very big and competitive company so we would like to make business with you in the near future. If you have any question pls do not hesitate contact with me. We are looking forward to receive your reply.
  Now we offer for sale the following items:
  
  Seamless pipe: carbon steel and alloy steel, mainly used for piling.
  
  A) Size range:
  Hot rolled seamless pipe: OD 32-630mm thickness 2.5-100 mm
  Cold drawn seamless pipe: OD 5-200mm thickness 2.5-15 mm
  
  B) Product standard:
  Item China Standard American Standard German Standard JIS Standard
  Liquid Conveyance GB/T 8163-1999 ASTM A53
  ASTM A106
  API 5L
  DIN 1626
  JIS G 3462
  Petroleum Crucking GB 9948-88 ASTM A179 DIN 1629
  Low&medium Pressure Boiler GB 3087-1999 ASTM A210 DIN 17175 JIS G3401
  High Pressure Boiler GB 5310-1995 ASTM A192
  ASTM A213 DIN 17175
  High Pressure Chemical Faulity GB 6479 DIN 2391
  Oil Tubing SY/T 6194-2000 API 5CT
  Also other standards are available, please contact us.