The risers are attached by means of flanges, studs, and heat-resistant brass nuts.
该管的重视手段法兰，螺栓，耐热黄铜坚果。
Yong Feng Gang, Dongguan City, Union metal products Factory specialized in producing automatic lathe, CNC lathe parts, metal axle pin, bolt, brass nuts and other metal products.
东莞市凤岗永盟五金制品厂专业生产加工自动车床件，数控车件，五金轴销，插销，铜螺母等五金产品。
Yong Feng Gang, Dongguan City, Union metal products Factory specialized in producing automatic lathe, CNC lathe parts, metal axle pin, bolt, brass nuts and other metal products.
东莞市凤岗永盟五金制品厂专业生产加工自动车床件，数控车件，五金轴销，插销，铜螺母等五金产品。
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