-
Strict quality requirements meet for API 6A RTJ A694 Gr. 60 PSL3 blind flange
Haihao Group recently completed production of a batch of API 6A RTJ A694 Gr. 60 PSL3 blind flanges for a distinguished client in the UAE. The order came with stringent quality requirements, demonstrating the client’s commitment to safety and performance in critical applications. Haihao Gro ... -
EN 1092-1 RSt 37.2 RF weld neck flanges ready for delivery
At Haihao Group, we take pride in meeting the diverse requirements of our customers with high-quality products. Recently, a customer ordered a batch of EN 1092-1 RSt 37.2 RF weld neck flanges, which have been manufactured to exacting standards and are now ready for delivery. Product Specificatio ... -
The role of serrated gasket surfaces on flanges
Flange sealing surfaces typically feature a ring of serrated threads, commonly referred to as a serrated gasket surface. This distinctive design plays a vital role in enhancing the sealing performance of flanges, particularly in high-pressure and high-temperature environments. The serrated surfa ... -
Delivery of GOST 33259 weld neck flanges with RTJ and RF sealing faces
Haihao Group is proud to announce the successful preparation and delivery of GOST 33259 weld neck flanges for a valued customer. These high-quality flanges are engineered to meet the demanding requirements of industrial applications, ensuring reliability and precision. Product Details Standards ...
Haihao pipe fitting department is the steel pipe fitting division of Hebei Haihao High Pressure Flange Pipe Fitting Group Co.,Ltd, we manufacture ,supply and serve our clients all over the world in the steel pipe fittings field, especially the butt welding pipe fittings.
Hebei Haihao pipe fitting plant is established in 1988.At the beginning , we start production from carbon steel elbows ,then steel pipe tees years later.In the 21 century, we establish the new factory to produce the stainless steel pipe fittings. Now our pipe fittings plants can manufacture most kinds of steel pipe fittings used in industry pipeline.
