Our company is a professional manufacturer of welded stainless steel pipes & tubes in China. Our scope of production is as follows: Material: SS304, SS304L, SS316L, SS321, 310S SS welded pipes ASTM A312, A358, A778 OD:219-3048mm WT:3-39mm SS welded tubes ASTM A554 OD:8-159mm WT:0.3-3.05mm