Astm a500 erw steel structural tubing Our capability : Outside diameter: 10-350 mm . Thickness: 1.8mm-15.0mm Steel grade: q235b, q345b, s235jr, s275jr, stk400, stk500. Standard: bs1139-1990, bs en39-2001, en10219, jis g3444-2004, astm a53, astm a106 , astm a500 . Astm a513 , jis g3452 , en10219, en10217 . Surface: hot dipped galvanized, pregalvanized, black, painted We have two factories , one pipe factory , one pre-galvanizing and processing factory . We can supply service : 1 cutting in any length . We offer precision cutting on the lengths of pipe with wide range . 2 .Beveling : we can apply any type of bevel to any degree required . Beveling can applied to the face of any size or diameter of pipe . 3 .Threading : threaded pipe can provide an sffective seal for pipes transforting liquids , gases , steam , and hydraulic liquid . 4.Grooving ; roll grooving can be done in any style according to industry standard s . 5. Hole drilling : drilling cna be done in any style according to the industry standards and customer requests , it can be applied to any position on the pipes . Manufacturer own two factories: main products : h beam , round tube , rectangular pipe , erw conveuer belt pipe, seamless steel pipe , scaffolding pipe , square and rectangular pipe , hot-dipping and pre-galvanized steel pipe, and other steel products, angle steel , steel section beams ,