- 材质:
- 无缝钢管
- 规格:
- 常规齐全
- 品牌:
- 国产进口
Main application areas Ammonia synthesis part valve part high temperature and high pressure equipment
Material grade b
Standard B
Country and region
Steel group structural steel
Subcategory B Seamless steel pipes for high-pressure chemical equipment
Seamless steel pipes normalized and tempered
Minimum
Large
Approximate
Yield strength
Tensile strength R
Elongation
Impact energy/
Raw material delivery status< br/> b Normalizing at ℃ ~ ℃, tempering at ℃ ~ ℃, or high temperature annealing at ℃ ~ ℃
Welding performance
The selection of welding rods is equivalent to B, indicating that it is a low hydrogen sodium type Low alloy steel electrode with coating resistant to hydrogen, nitrogen and ammonia corrosion. Use DC reverse connection. It can perform all-position welding and has good welding process performance. It can preheat medium-thick welding parts to about ℃. After welding, it is tempered at ℃.
Used for welding low alloy steel containing molybdenum, tungsten, vanadium, niobium and other elements. Such as resistance to high temperature and high pressure hydrogen corrosion
There was no relevant gas shielded welding wire in the past few years! China Chemical Engineering No. 4 Construction Co., Ltd. has introduced welding wire from Japan during its long-term construction practice and has passed the relevant welding process assessment.