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Haihao Group Delivers API 6A A350 LF2 CL1 Flanges for Russian Low-Temperature Wellhead Piping
Haihao Group recently completed fabrication and shipment of forged low-temperature flanges for a Russian oilfield client, combining API 6A Type 6B ring-joint units and standard ASME B16.5 blind flanges. All flanges are produced from A350 Gr. LF2 CL1 low-temperature carbon steel, with dedicated h ... -
GOST 33259-2015 Stainless Flange Package Shipped for Russian Process Plant
Russian process and utility projects rely heavily on GOST standard flanges to match existing Soviet-era and modern CIS piping systems. Haihao Group has completed manufacturing and shipment of GOST 33259-2015 stainless flange for a Russian end-user, combining super duplex 2507 and AISI 304 grades ... -
Haihao Group Ships ASME B16.5 Flange Sets for Singapore Sour Gas Project
Haihao Group recently completed fabrication and shipment of forged welding neck raised face flanges to our Singapore customer. This batch of ASME B16.5 flange is specially engineered for sour service applications, fully complying with NACE MR 0175 / 0103 requirements to resist sulfide stress cra ... -
ASTM A105 ASME B16.5 RF Welding Neck Flange Shipment to Venezuela Pipeline Project
For oil and gas pipeline assembly in Venezuela, welding neck flanges remain a reliable choice for high-integrity permanent flange connections. Haihao Group has finished manufacturing, inspection and shipment of ASTM A105 ASME B16.5 RF welding neck flange for a Venezuelan client. This batch cover ...



























