Equal Tee should be used in the production of portable hardness tester in the specified location (branch, head, shoulders, weld) macro hardness check, check each location to take 3 to 5 equally spaced points for hardness testing, calculate several The average of the points was taken as the result of the examination. Each batch of products should be pumping 3% and not less than 2 to do the surface hardness test, the results if one failed, should be double test, if there is still a failure, should be tested one by one. CANGZHOU HAOYUAN PIPEFITTINGS MFG CO., LTD is professional offer Carbon Steel Reducing Tee T , Equal Tee ,Steel Pipe Fittings , Pipe Elbow ( 90 Degree Elbow ,45 Degree Elbow ,180 Degree Elbow , Short Radius Elbow and Long Radius Elbow ) ,Pipe Bend, Pipe Reducer (Concentric Reducers ,Eccentric Reducers ), Pipe Cap. Flange, bends, socket and threaded fittings, seamless pipe . Our Steel pipe include Seamless Pipe round ,Seamless Steel Pipe ,ERW Steel Pipe ,Lsaw Steel pi…