1. outside diameter:  75mm-2265mm

2. thickness:  12mm-120mm

3. standards:   ANSI, DIN, JIS, BS, ISO, GB/T, JB, SH, HGS and so on.

4. use:   petroleum, chemical industry, medicine, electric power, astronautics, war industry, fire prevention, metallurgy, shipbuilding, fuel gas, nuclear electricity, urban construction, hot-water heat and environmental protection etc.

5.  certificate:  ISO9001:2000 , ASME  and Boiler A-level

6. material: ASTM A 234 WPB,ASTM A 234WP1,WP5,WP9,WP11,WP22,304,316,314L,316L