... /316L,317L,321,310S,S31803,2507 seamless pipe fitting Features: 1) Type: butt welded and seamless pipe fitting2) Size: DN15-DN1200 (1/2"-48 ... , foodstuff, power, papermaking, chemical, medical equipment, aviation, boiler heat exchanger, and other fields.7) Packing: Fumigation-free plywood cases or as ...