■高温高压焊接式手动闸阀说明 1、本焊接闸阀中部连接方式有法兰连接与自密封式两种。 2、阀体长度及焊接口尺寸倒角坡度可根据用户要求生产。 Directions 1.Connection in the middie part of the welded gate valves may be of either fIabhe lr self-sealing type. 2 Vaive length.Weld size and welding slope may be specified by customer.