For the special products produced by Haokun, the thickness of A105 blind flange customized according to the customer's requirements and the number and diameter of connecting bolts are also related to the pressure. A105 flat welding flange with neck is a kind of flange that inserts the pipe into the inner ring of flange for welding,. If the production process of segmented production is used, the specification of 12m-15m or larger can be achieved. This kind of flange has good quality assurance. Because the raw material is medium plate, the density is good. The welding process at the interface of the rolled flange is the most important, and it is necessary to do ultrasonic flaw detection. If the joint is well done, there will be no problem with the material of the whole flange.
For the special products produced by Haokun, the thickness of A105 blind flange customized according to the customer's requirements and the number and diameter of connecting bolts are also related to the pressure. A105 flat welding flange with neck is a kind of flange that inserts the pipe into the inner ring of flange for welding,. If the production process of segmented production is used, the specification of 12m-15m or larger can be achieved. This kind of flange has good quality assurance. Because the raw material is medium plate, the density is good. The welding process at the interface of the rolled flange is the most important, and it is necessary to do ultrasonic flaw detection. If the joint is well done, there will be no problem with the material of the whole flange.
Haokun produces special products, customized A105 blind flange according to customer requirements, butt welding ring with neck loose flange, threaded connection (threaded) flange and welding flange, low pressure small diameter has threaded flange, high pressure and low pressure large diameter use welding flange, different pressure flange thickness and connecting bolt diameter and quantity are different.
When steel plate or section steel is used for manufacturing, the following requirements must be met:
1. The steel plate used should pass certain inspection standard before use, and the steel plate should pass ultrasonic flaw detection without delamination defect, so as to ensure the quality and performance of production and processing.
2. It should be cut into strips along the rolling direction of the steel, bent and butt welded into a ring, and the surface of the steel should form a cylindrical surface of the ring. It is not allowed to directly machine the steel plate into flange with neck.
3. The butt weld of ring should be full penetration weld.
4. The butt weld of the ring shall be subject to post weld heat treatment, and shall be subject to radiographic or ultrasonic testing. The radiographic testing shall meet the requirements of class II of JB4730, and the ultrasonic testing shall meet the requirements of class I of JB4730. Haokun produces special products, customized A105 blind flange according to customer requirements
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