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Royal industry is specialized in alloy seamless steel pipe, and our advantage product is U shaped alloy seamless steel pipe, which also can be called U bend seamless alloy steel pipe. These tube is used in boiler ,ex-change heater, automobile , precision tube, shipbuilding and so on.
Most of our seamless alloy tube are
The process of manufacture is : raw material inspection ---raw material pickled --- raw material cutting---raw material heating----perforation process---pipe pickled/phosphorization---cold rawing---heat treatment----property checking---straightening--inspection---packing
Royal industry can supply the following grade of seamless alloy steel tube.
ASTM A209/A209M & ASME SA209/SA209M