... welcome order Features: (1) Commodity: Seamless ... 1.4301, 1.4306, 1.4307, 1.4401, 1.4404, 1.4410, 1.4438, 1.4449, 1.4462 1.4539, 1.4541, 1.4550, 1.4571, 1 ... .4845 and so on. (5) Standards: ASTM /ASME /EN /DIN /JIS (6) Size: A ... ) NPS: 1 ...