What are the requirements for stainless steel pipe cap splicing

Author : admin

Update time : 2021-12-28 16:00:31

During splicing, only radial and circumferential weld directions are allowed. This requirement may be cancelled for large stainless steel pipe caps in the future.
The splicing distance shall be greater than 3 δ， And not less than 100mm (the welding heat affected zone is a high stress zone, and the chemical composition in this zone will be burned. Therefore, it is necessary to avoid the high stress zone, which is related to the thickness.
According to practical experience, the stress attenuation length is greater than 3 δ， And not less than 100mm). However, refrigeration equipment is difficult to meet this requirement, which has its particularity.
For the head formed after splicing, the splicing weld shall be subject to 100% radiographic or ultrasonic testing, and the qualification level shall follow the equipment shell.
The final formed weld detection level and proportion are the same as that of the equipment shell, which is high waste. Example: if the equipment shell is 20% tested, III is qualified.

Previous : Difference between cap and carbon steel pipe cap

Next : What are the parameters of the pipe cap

DIN 2635 PN40 Welding Neck Flange Dimensions

May .26.2026

Dimension and weight of DIN2635 PN40 Welding Neck Flange

DIN 2634 PN25 Welding Neck Flange

May .14.2026

DIN 2634 PN 25 Weld Neck Flanges are generally used in high pressure applications, where hot or cold temperatures exist.

DIN 2633 PN16 Welding Neck Flange

May .12.2026

DIN 2633 PN16 Welding Neck Flange

DIN 2632 PN10 Welding Neck/WN Flange Dimensions

May .07.2026

DIN 2632 PN 10 Weld Neck Flanges are generally used in high pressure applications, where hot or cold temperatures exist. These steel DIN 2632 weld neck flanges are circumferentially welded into the system at its neck which means that the integrity of the butt welded area can be easily examined by radiography.