... elbow 弯头 好像有人也叫bend或bending 哪种更地道，我也不大明白 butt welding flange 对焊法兰 surfacing flange 堆焊法兰 ...
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Butt Welding Neck Flange 带颈对焊法兰
Provide welding neck flange butt welding required for the purpose of the right pad with neighboring component.
提供焊接法兰的脖子上对接焊目的所需要的正确垫与邻近组成部分。
The parts material, flange and butt welding dimension may selected according to current operating condition or users' requirement to meeting the requirements of various engineering.
零件材料，法兰和对焊尺寸可根据实际工况或用户要求合理选配，满足各种工程需要。
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