Standard:

ASTM B337 ASTM B338 AMS, MIL, DIN, BS, JIS, GB/T, ISO, etc.

ASME SB337 ASME SB338

Grade:

GR1, GR2, GR3, GR7, GR9, GR11, GR12, GR16, GR17,etc.

Inspection:

Hydrostatic, pass ball test, etc

Type:

According to the customers drawings