Blind flange
Material: CS: A105(N) C22.8 ST-37.2 S400 S440 SQ235(CS20#) A106B A53 Q345
SS: 304 316 304L 316L A350LF2 A182
Size: DN15-DN3000
Standards
American standards: ASME B 16.5 / b16.47A&B / B16.48 / AWWA
German Standards: DIN 2527 / 2565 / 2566 / 2573 / 2576 / 2627-2629 / 2630-2638 / 2641 / 2642 / 2655 / 2656 / 2673 / 86029 / 86030
British Standards: : BS 4504 / BS 10
Japanese Standards: : JIS / JPI
Italian Standards: : UN 2253 / 2254 / 2276-2278 / 2281-2284 / 6086 / 6084 / 6089
Non-Standard: : Diameter below 3 meters and unit weight below 4 Mts.
Chinaese Standards: HG20592-20605-97 / 20615-20626-97 / SH 3406-96 / JB/T81-86-94 / JB4700-4707-92 / JB 4721-92
European Standards: : EN 1092
Certificates: ISO9001-2000 quality system certificate
D2000-Merkblatt WO/TRD100 Boiler Pressure Vessel Specification Certificate
PED Certificate
ISO14001: 2000: ISO14001
Manufacture License of Special Equipment People's Republic of China
D&B Certificate
Tarim Oil Market Access Certificate: Tarim Oilfield Petro-chemical Branch Security Certificate
China Credit Example Certificate
China Top Enterprises
Credit Degree Certificate
We are CO-WORKING DEVELOPING Co., Ltd, we are from Tianjin, China. Our main business scope is steel products, such as pipes, pipe fittings and flanges, valves and so on, according to ANSI/ASTM, JIS, DIN, API, GOST and non-standard. We also can supply equipments for oil field, and machines for welding and cutting. We have three factories, one is located in Hebei Province, one is located in ShanDong Province, and the other is in Tianjin. Moreover, we have good and long term relationship with our suppliers in China. So we can control the good quality, and short delivery time. And we are nearby Tianjin seaport and Qingdao, Dalian seaport, so it is very convenient to export.
Our products have been widely used in petrochemical industry, mining machinery, engineering machinery, pipe lines, water treatment, textile machinery, heavy machinery, metallurgy, ship building, tire mold, transport vehicle, wind electric power generation, etc.
We always export our products to Europe, Russia, India, Korea, Japan, Spain and so on.
Looking forward to cooperating with you, we are. Welcome to visit our factory and our office. Hope to establish long term business relationship with you.
