Stainless Steel Pipe Standard: ASTM, JIS, GB, DIN, EN Steel grade: 200 series, 300 series, 400 series. Detailed product description Stainless steel welded tubes 1. Form: Round, square, rectangular, oval, channel U, etc. 2. Material: 304, 304L, 316L, 321, 301, 201, 202, 409, 430, 410, etc.3. Packing: Each one in a soft poly bag into bundle with knitted bag or steel crate, or wooden case. Also as ...