... etc,Surface finish: Annealed/cold pilgered / manual polished Pipe DescriptionHebei Shengya Pipe Fittings Co., LtdOur company is located in China ... pipe fittings production base, the industrial area in Yanta ... :Solution annealed,pickled,grey white,with plan endsApplication range:For foodstuff,medical equipment,biology,electron,chemical.petroleum,fertlizer,boiler ...