- seamless carbon steel pipes
- 2016-10-25 19:47
- Seamless carbon steel pipe: 1. General used seamless steel pipe ASTM A53 GR.B, steel: SA53 B, Size: 1/4-28, 13.7-711.2mm
- Longitudinal supply
- 2016-10-25 12:39
- Supply pipeSince the 1930s, with high-quality strip steel rolling production and the rapid development of welding and in