Renewal of qualification may be made for any process by welding a single test coupon of either plate or pipe and by testing of that coupon as required by QW-301 and QW-302 .

如需重新获得资质，则该焊工需要遵照 QW-301 和 QW-302的要求，在一个板材附件试片，或一个管材附件试 片上，进行焊接 试验。

Consideration of Standard on Mechanical Properties Test of Welding Coupon of Pressured Equipment

对承压设备产品焊接 试 件的力学性能 检验标准的思考

Results : The result of bacteriostasis ring test for the stainless steet coupon containing 3.8 % ( m / m ) copper was 0 mm .

结果，含有质量分数3.8%铜的不锈钢 片抑菌环 试验为 0mm；

When flow velocity reaches 2.62 m / s the local corrosion is pitting corrosion and the protective corrosion product film can not form on the test coupon surface at the temperature of 100 ℃ and the CO_2 pressure of 0.03 MPa .

在流体速度为 2.62m/s的情况下，温度为100℃、CO2分压为0.03MPa时，发生的局部腐蚀主要为点蚀，试样表面未能形成保护性腐蚀产物膜；

Based on the single shear test the interface behavior of concrete coupon bonded with different CFRP sheets in different cases was studied .

本文根据单面剪切 试验，对 试 件在不同 控制条件下的界面粘结性能进行了深入研究，对比分析，得到了海水环境 下 CFRP-混凝土界面性能的变化规律。

A Welding Procedure Qualification Record ( Form No. : FN09 / 02-02 ) is a record of the welding data used to weld a test coupon .

焊接程序检定记录（表号： FN09/02-02）为焊接数据记录文件，用于附体试片的焊接操作。

The laboratory assessment tests showed that at a concentration of 60 mg / 1 the corrosion rate of test coupon was 0.029 mm / yr and the cohesion rate was 4.32 mcm which were at the best levels .

实验室评定表明：在药剂浓度为60mg/L的情况下，碳钢试样的腐蚀率为 0.029mm，a，粘附速度为4.32mcm，均达到很好级；

Generally the procedure qualification test shall be carried out on the product or on the relevant test coupon .

工艺评定试验一般应在产品上进行，也可在相应的 试 块上进行。