什么是焊接WPS证书？WPS不是焊接证书，是焊接工艺规程的缩写，全称是Welding Process Specification。
是焊接工艺文件的一部分，一般来说，公司需要向第三方证明自己的焊接制造能力，这时候就需要做焊接工艺认可试验，焊接工艺认可试验按照需要编写的文件，可以分三步来说。
第一步：做焊接认可试验前，需要先准备好PWPS(焊接工艺计划书)向第三方申请做认可试验。
经第三方同意后，与第三方约定时间，准备做焊接工艺认可试验。
第二步：在第三方在场的情况下，焊接试板（或试管），试验完的焊接试件还需要做无损检测，无损检测合格了还需要做力学检验，等结果出来了需要编写WPQR文件（焊接工艺评定记录），WPQR的所有数据必须真实记载的。
第三步：根据标准上各参数的覆盖范围，和WPQR上的焊接参数，对PWPS文件进行修改，最终确定的文件就是WPS文件。
WPS文件是工厂用来指导进行焊接生产的。
一般一个焊接制造厂会有非常多的WPQR和对应的WPS文件，文件要覆盖工厂所有的焊接工艺。
What is the WPS welding certificate?The WPS is not welding certificate. It is an abbreviation of welding procedures, full name is Welding Process Specification. Which is a part of the welding process documents, generally speaking, companies need to third party to prove their welding manufacturing capability, and it needs to make the welding procedure qualification test, the welding procedure qualification tests in accordance with the needs of written documents, can be divided into three steps.The first step: before make welding approval testing, need to prepare PWPS (welding process plan) shall apply to the third party as approval test. The third parties agreed, and the third party appointed time, ready to do the welding procedure qualification test.The second step: in the presence of the third party, the welding test plate (or tube), test after welding specimen need to do NDT, NDE qualified also need to do mechanical test, etc. results come out to write WPQR files (PQR), WPQR all data must be true records.The third step: according to the coverage of the parameters of the standard of welding parameters, and the WPQR, modify the PWPS file, the final file is WPS file. The WPS file is used to guide the welding production factory. General a welding factory will have WPQR very much and the corresponding WPS file, the file must cover all welding factory.WPS、PQR、JIC 焊接专业上面的几个文件区别焊接工艺规程(WPS) 焊接工艺评定记录（PQR）焊接工艺规程（JIC）这几个文件有什么具体作用、区别？WPS相当于大纲，就是这个试验怎么做，要求达到的效果是什么，用什么东西焊PQR就是具体数据的记录，电流电压之类的JIC就是相当于说明书Several files WPS, PQR, JIC welding the top professional distinctionWelding procedure specification (WPS) welding procedure qualification records (PQR) welding procedure specification (JIC) this paper several specific role, what is the difference?WPS is equivalent to the syllabus, this test is how to do, what is required to achieve the effect, what weldingPQR is the specific data, such as current and voltageJIC is equivalent to the instructions焊接工艺中的WPS与PQR 是什么关系，哪个先哪个后？WPS是焊接工艺规程，PQR是焊接工艺评定。
