在某些部门的某些工作条件下(如石油部门的输油管线)，不允许采用通径收缩的阀门。
In some sectors certain operating conditions (such as the petroleum sector, pipeline), not allowed to use the path contraction of the valve.
甲、卖方应将下列单据提交付款银行议付货款/托收付款，如为信汇付款，下列单据应径寄买方。
A. The Sellers shall present the following documents to the paying bank for negotiation/collection, or to the Buyers in case of payment by M/T.
阀由警戒装置、弹簧、阀碟、扣环和阀座组成，可以和许多管件连接，如缩径管接头、排水弯头等。
The valve consists of a guard cage, spring, valve disc, retaining ring and seat. It can be combined with pipe fittings such as reducing couplings, drain elbows, etc.
应用推荐