• 2022-05-18The type of the flange sealing surface
• 2022-05-09Hot dip galvanized flange and cold galvanized flange main difference
• 2022-05-05Advantages of galvanized flange
• 2022-04-29Why should the flange be galvanized?
• 2022-04-26Slip on flange is being shipped to Singapore
• 2022-04-24The delivery of Figure-8 flange
• 2022-04-20Exported JIS B2220 SS304 SOH flanges to India
• 2022-04-15The delivery of plastic coated slip on flange
• 2022-04-12Order of drawing flanges
• 2022-04-07Win the customer’s trust, the end of the flange order is a new beginning
• 2022-04-02Hebei Haihao Group has received the DNV certification
• 2022-04-01The delivery of stainless steel large size flanges has been arranged
• 2022-04-01The customer arranges a third party TUV to inspect the flanges in the factory
• 2022-02-21Big size caps welded with flanges
• 2022-02-16Use and connection of spectacle blind
• 2022-02-09Characteristics of spectacle blind
• 2022-01-06Hebei Haihao Group finished weld neck flange order from SNGPL successfully
• 2021-12-27What’s the preheating treatment of flange?
• 2021-12-07What’s the standard system of flange?
• 2021-11-23Correct packing and shipping is an important step for piping products
• 2021-08-24The Spanish customer ordered large size flanges
• 2021-07-27Kazakhstan – insulation flange order
• 2021-07-20What’s orifice flange and the type of orifice flange?
• 2021-07-02Stainless steel flanges are ready for shipment to Egypt
• 2021-06-30Heat treatment technology of Weld-neck flange
• 2021-06-22What are the causes of flange leakage?
• 2021-06-21Wind power flange manufacturing technology
• 2021-06-09Forging process of weld neck flange
• 2021-05-25The Colombian customer ordered large size flanges
• 2021-05-17Laser cutting method of weld neck flange