Aluminum, pipe, stainless, pipe, steel, pipe. Reload image Top of Page. Visit our accessories page to view all wtti apparel that is available for purchase. All material is marked with heat numbers for complete traceability. Wtti stocks pipe coupons for welding procedure or performance qualification testing to all codes including: AWS, asme, API, Mil Standards, etc. . Backing rings or bars, practice sizes, special sizes (see photo). These coupons may be purchased here. Simplifies welder qualification: Qualifies for all thicknesses per QW-452.1(b Replaces testing on both 2 and 6 coupons, Qualifies for all diameters down to 1 OD per QW-452.3, and. Contact us for a" if your job requires large quantities or for materials, and sizes not shown in our store.
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Have a salesperson contact me, company, address. Wtti stocks plate coupons for welding procedure qualification testing to all codes including AWS, asme, Mil Standards, etc. Use for qualification testing, t01-2342L: SA-106,. Use for training or qualification testing. Do your own: Welder training, welder qualification, welding procedure qualification, pricing. Super plate coupons, if you do not need to qualify for pipe, our new super plate coupons offer similar advantages. Weld Test, coupons - Plate or, pipe wtti_store, fREE.