304 / 304L Stainless Steel Sanitary Tubing Heavy Wall With Good Heat Resistant

316 / 316L and 304 / 304L Seamless Stainless Steel Tubing ASTM A312 A269 specifications

zheheng steel is a professional producer for ss 316l stainless steel pipes ,pipe fitting,flanges ,elbows, reducer ,90,45 degree elbows, we are not only produce austentic stainless steel material ,but also supply nickel alloy steel pipes and fittings .

other alloy material standard description:

Production range:

Standard Specification:

zheheng steel Chemical assurance

1. Each lot of raw materials will be tested by spectrometer before put in storage.

2. 100%PMI the mother pipe to ensure we put right material.

2. 100%PMI the finished pipe again to ensure we produced right grade

Heat Treatment Assurance

A full-automatic natural gas furnace with 24 meters in length.The real temperature tolerance could be within 10℃.

QUALITY CONTROL

1~ Incoming Raw Material Inspection

2~ Raw Material Segregation to avoid steel grade mix-up

3~ Heating and Hammering End for Cold Drawing

4~ Cold Drawing and Cold Rolling, on line inspection

5~ Heat Treatment, +A, +SRA, +LC, +N, Q+T

6~ Straightening-Cutting to specified length-Finished Measuring Inspection

7~ Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc

8~ Packing and Stocking

Our product show:

ZHEHENG STEEL has passed approved by ABS, DNV, GL, BV, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9001-2008, ISO 14001-2004 With good quality and competitive price, we warm a good reputation in domestic and international markets. We hope to build a good and long relationship with customers from home and abroad.