... GB,JIS,DIN0.4-1.9mm, 1000/1250mmWidely used in construction, furniture Automotive manufacturing, electric products, vehicles, ... so onGB, ASME10-1400mm, 0.5-200mmWidely used in ship,liquid service,ptroleum craking,chemical fertilizer equipment,high pressure ... .8GB5310-1995, ASTM A106-1999219-824mm, 24-78mmUsed in automobile industry,chemical industry,infrustructure & other related industriesFertilizer ...