Rectangular tubes are widely used
Common materials of welded square pipes are: Q235A, Q235C, Q235B, 16Mn, 20#, Q345, L245, L290, X42, X46, X60, X80, 0Cr13, 1Cr17, 00cr19ni11, 1Cr18Ni9, 0cr18ni11nb, etc.
Welded stainless steel pipe for decoration (GB / T 18705-2002), stainless steel welded pipe for building decoration (JG / T 3030-1995), large diameter welded steel pipe for low pressure fluid transmission (GB / T 3091-2001), and welded steel pipe for heat exchanger (yb4103-2000).
GB / t6728-2002, GB / t6725-2002, gbt3094-2000, JG 178-2005, ASTM A500, JIS g3466, en10210 or technical agreement.
GB / t3094-2000 (national standard) cold pressed special-shaped rectangular pipe
GB / t6728-2002 (national standard) cold formed hollow section steel for structure
ASTM A500 (American Standard) carbon steel Cold-Formed Welded rectangular tubes and seamless rectangular tubes with round and special-shaped sections for structure
En10219-1-2006 (European standard) cold formed welded hollow structural sections of non alloy and fine grain
JIS g 3466 (Japanese standard) angular rectangular pipe for general construction
It is widely used in machinery manufacturing, construction industry, metallurgical industry, agricultural vehicles, agricultural greenhouses, automobile industry, railways, highway guardrails, container skeleton, furniture, decoration and steel structure.
For engineering construction, glass curtain wall, door and window decoration, steel structure, guardrail, machinery manufacturing, automobile manufacturing, household appliance manufacturing, shipbuilding, container manufacturing, electric power, agricultural construction, agricultural greenhouse, bicycle frame, motorcycle frame, shelf, fitness equipment, leisure and tourism products, steel furniture, various specifications of oil casing, oil pipe and pipeline pipe, water, gas, sewage Air, heating and other fluid transportation, fire fighting and support, construction industry, etc.
