And the hardness of the weld account for 70 percent of the main body material.
Influence of car body material on running resistance of mass transit vehicles
J41N Type PN40 steel globe valves: manual, flanged, straight-through, the valve seat sealing surface material as nylon plastic, nominal pressure PN40, carbon steel valve body material cut-off valve.
The carbon graphite material prepared by the means of improving the oxidation resistance of the basic body materials and impregnated with phosphates had better oxidation resistance.
Stainless steel bellows globe valve is made of stainless steel 304, 316 as the corrugated pipe valve body material, corrosion proof performance, heat resistance, low temperature resistance.
The technology of developing quality and strong pick is found by researching the hard metal alloy, pick-body material, weld gap, technique of braze welding and heat treatment.
If the valve body material can be welded, but very different thermal expansion coefficient, or changes in operating temperature range of a larger thread junction closure weld must be honey.
"The valve body material shall be shock resistant ductile iron with extended neck for 2"of insulation. There will be no exposed fasteners in the waterway to pin the disc to the stem."
In this paper the author described the applications of PU in automotive parts at home and abroad including PU foam cushion, such as seat cushion, seat back, headrest and armrest, and energy absorbing and damping materials such as padded dashboard, steering wheels, bumper, fender and body material.
