Specifications: diameter: 320 to 127 mm thickness: 0.4 to 12.7 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe

ASTM A252 steel pipe

ASTM A252 steel pipe
Out Diameter: 219.1-3048mm 
Wall thickness: 5-30mm 
Length: 6m, 9m, 12m, LR1 , LR2 , LR3 
Steel Grade: X42 -  X80 
Standards: GB, SY, ASTM, API 
Certification: API 5L PSL1, PSL2, API 5CT, EN10217 -1, 2, 5.
Technical differences between hot-rolled steel and cold-rolled steel
By contrast, we can understand the different hot-rolled steel and cold-rolled steel pipe on the technical process, can be said to have their own strengths, and hot-rolled steel in recent years, the sudden emergence of a more strengthened the dominant position of hot-rolled steel, so we the choice of steel pipes according to the need to choose.
ASTM A252 steel pipe
Phase for hot-rolled steel, cold-rolled steel pipe is also a certain industry characteristics, but we can analyze the difference between its hot-rolled steel from following it the advantages of high precision cold-rolled precision steel pipe is a new high-tech energy-saving products, high-precision cold drawn precision steel tubes promotion to save steel processing ergonomics, energy conservation so-called high-precision cold drawn seamless steel pipe, the diameter size precision (tolerances) strict internal and external surface finish, roundness straightness, uniform thickness in the technology of production of high precision cold drawn seamless steel pipe main technical indicators have reached or in part, exceeding the national standard GB8713 - 88 and international standards ISO4394/I-1980 (E) requirements major technical indicators and standards table selection of precision seamless steel tube manufacturing mechanical structure or hydraulic equipment, etc., can greatly reduce the hours of machining, improve material utilization, at the same time help to improve product quality. cold drawn or cold rolled precision seamless steel pipe (GB3639-2000) is used for mechanical structure, hydraulic equipment, high dimensional accuracy and good surface finish of cold drawn or cold rolled precision seamless steel tubes.
Spiral weld construction allows large diameter pipe to be produced from narrower plates or skelp. The defects that occur in spiral welded pipe are mainly those associated with the SAW weld, modern spiral linepipe from a premium quality supplier is of a quality equivalent to straight seam welded pipe, and it has been used extensively in Canada and Europe for high pressure gas pipelines in grades up to API X100M.

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