... ,317L Surface:bright,polished,black Certificate:ISO,SGS Origin:China Stainless Steel ElbowMaterial:403,201,202,304,304HC,304L,310S,316,316L ... :ISO,SGSOrigin:Chinawe can produce many kinds of pipe elbows.Material: carbon steel, stainless steel,alloy steel, Aluminum alloy and so on.Standard: GB/T12459, GB ... ) Wall thickness: SCH5S-SCH160 45 degree, 90 degree, 180 degree Stainless Steel Pipe Elbow