Product Description
Stainless steel square tube is a kind of hollow long steel, because the section is square, it is called square tube. A large number of pipes are used for conveying fluids, such as oil, natural gas, water, gas, steam, etc. In addition, when the bending resistance and torsional strength are the same, the weight is lighter, so it is also widely used in the manufacture of mechanical parts and engineering structures.
Specifications | Stainless steel square pipe |
Width | 2*2~350*350mm |
Thickness | 0.1mm~35mm |
Length | 2000mm-12000mm etc |
Standard | ASTM、 AISI JIS、 GB. DIN、 EN |
Surface | BA, 2B、 NO.1, NO.4、 4K、 HL, 8K |
Certification | ISO、 SGS, BV |
Grade (ASTM UNS) | 304, 304L 321, 316, 316L, 317L, 347H, 309S, 310S, 904L, S32205,2507, 254SMOS, 32760, S31703, S31603,316Ti, S31635, S31254, N08926, 2205, S32205, S31008, S30908, S32750, S32760, 630etc |
Stainless steel square pipe classification: square pipe is divided into two categories: seamless steel pipe and welded steel pipe (seamed pipe). According to the cross-sectional shape, it can be divided into square and rectangular pipes. The widely used round pipes are round pipes, but there are also some semicircular, hexagonal, equilateral triangle, octagonal and other special-shaped pipes.
Seamless steel pipe
Because of their different manufacturing processes, they are divided into two types: hot-rolled (extruded) seamless steel pipes and cold-drawn (rolled) seamless steel pipes. Cold drawn (rolled) tubes are divided into two types: round tubes and special-shaped tubes.
A seamless tube is a long strip of steel with a hollow section and no seams around it.
The types of seamless pipes are as follows:
(1) Seamless pipes for general structure and mechanical structure (GB8162-87)
(2) Seamless tubes for low and medium pressure boilers (GB/T3087-1999)
(3) Seamless tube ST45.8/111 for high pressure boiler (GB5310-85)
(4) Seamless pipes for conveying fluids (GB/T8163-1999)
(5) Cold-drawn or cold-rolled precision seamless pipe (GB3639-83)
(6) Steel pipe for geological drilling (YB235-70)
(7) Oil drilling steel pipe (YB528-65)
