1、是我们查验沟槽管件品质的首要。客户在购买沟槽管件的时候要注意观查螺纹长度和热镀锌度。螺牙长度能直接反映沟槽管件能不能用。性价比高的沟槽式管件，螺牙很长，而品质不太好的沟槽管件，螺牙比较短。而热镀锌确定沟槽管件是不是承受腐蚀，这也是影响沟槽管件产品品质的一个关键要素。

       It is our primary responsibility to inspect the quality of groove fittings. Customers should pay attention to checking the thread length and hot-dip galvanizing degree when purchasing groove fittings. The length of the screw thread can directly reflect the quality of grooved pipe fittings. Trench fittings with high cost-effectiveness have long screw threads, while groove fittings with poor quality have shorter screw threads. And hot-dip galvanizing is a key factor affecting the quality of groove fittings to determine whether they are resistant to corrosion.

2、根据对沟槽管件的触击，可以凭响声及觉得对沟槽管件的品质有一定的了解。根据触击可以将其掌握沟槽管件的延展性是否到位。针对沟槽管件的挑选这一个漫长的过程，客户购买的时候，都要细心挑选品质达标的商品，不可以片面性注重某个优势。

      Based on the impact on the groove fittings, one can have a certain understanding of the quality of the groove fittings based on the sound and perception. By tapping, it is possible to determine whether the ductility of the groove fittings is in place. Regarding the lengthy process of selecting groove fittings, customers should carefully select products that meet the quality standards when purchasing, and should not focus solely on a particular advantage.