1) Material: carbon steel, stainless steel and alloy steel
2) Standards: ANSI B16.5, ASME, JIS, DIN, BS
3) Nominal diameter: 1/2"-5,000mm
4) Class: 150lbs, 300lbs, 600lbs, 900lbs, 1,500lbs, 2,500lbs
5) Surface treatment: transparent oil, rust-proof oil, hot galvanizing
6) Special design available