Square steel pipe
What is Square pipe?
Square pipe is a kind of name for square tube and rectangular tube, that is, hollow tube with equal side length and unequal side length. It is rolled steel strip after process treatment. Generally, the strip steel is unpacked, flattened, crimped, and welded to form a round tube, then the round tube is rolled into a square tube and then cut to the required length.
Commonly used welding processes are arc welding square pipe, resistance welding square tube (high frequency, low frequency).
Comparison of implementation standards square tube.
China: GB/T6728-2002 Cold-formed hollow section steel for structure.
American standard: ASTM A500 cold-formed carbon steel for structural use, round and special-shaped cross-section welded rectangular pipes and seamless rectangular pipes.
European standard: EN 10219-1-2006 non-alloy and fine-grain cold-formed welded hollow structural profiles.
Japanese standard: JIS G 3466 (Japanese standard) Angle rectangular tube for general structure.
Comparison of domestic and foreign steel grades square tube.
American Standard: ASTM A53/A283-D
European standard: s235J0 (1.0114)
Japanese standard: GGP/STRY41
Square tube uses
Products are widely used in machinery manufacturing, construction, metallurgical industry, agricultural vehicles, agricultural greenhouses, automobile industry, railways, highway guardrails, container frameworks, furniture, decoration and steel structure fields, etc.
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