Welded requirement for large size fitting and flange

Compared with the standard flange pipe fitting, the welding seam requirements are very strict, this is because the use of large flange pipe fitting environment requires higher strength.Therefore, strict testing technology is the key to ensure the welding quality of large flange pipe fittings.For welding of large diameter flange connections, 100% ultrasonic or radiographic testing is required.The purpose of the inspection is to ensure that there are no cracks in the appearance of the flange joint or other defects in the strength of the flange joint.In terms of testing equipment, ultrasonic testing and radiographic testing are generally used.

Large caliber flat flanges used for wind power industry

In the large diameter flange pipe flange pipe fittings and other heat treatment heating temperature is a very important goal, the choice of heating temperature and control involves the heat treatment quality and the quality of the final product, therefore, in the process of large diameter flange pipe fittings such as heat treatment, how to choose the suitable method to heating, and how to control the heating temperature, is one of the key points of quality of production.

5 meter OD flange welded caps

HEBEI HAIHAO GROUP has been focusing on pipeline products for 20 years, focusing on product quality control, striving to achieve 100% customer satisfaction.Over the years, we have served more than 100 companies in more than 30 companies around the world, and won the unanimous praise of customers.The company focuses on the business philosophy of “customer first” and strives to build a well-known brand in the pipeline industry.

1.78meter size elbow