Wenzhou Zheheng Steel Industry Co.,Ltd
To provide safe and reliable high quality stainless steel ,nickel alloy pipes and fittings
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ASTM A778/A312 stainless steel welded pipe for tp321 in sewage engineering / stainless steel welded tube
zheheng steel as one of the leading manufacturer in stainless steel welded pipe industry,we can supply to you a778 welded stainless steel pipe ,a312 welded stainless steel pipe,tp321 erw welding stainless steel tubing, zheheng steel as also one of leading suppier for welded stainless steel pipes ,ERW welding stainless steel pipe are our competitive products.
We have the most advanced producing and testing equipment, also have the biggest production scale.
Mtsco use the advanced ERW and EFW technology from Japan and Korean, making the close dimension controls and the tolerance can be controlled +/-2°C;
Application:
a) General service industries (petroleum, food, chemical, paper, fertilizer, fabric, aviation and nuclear)
b) Fluid, gas and oil transport
c) Pressure and heat transmission
d) Construction and ornament
e) Boiler heat exchangers
f) Decorative usage (road lamp facilities, bridge handrail, expressway railing, bus stop, airport and
gymnasium)
boiler, auto parts, medical equipment, building materials, food industry
Products will be done PMI, NDT tests before they have been sent to our clients.
We have PED, ISO certificates. PED , ISO9001
Produt details :
| Grade
| 304, 304L, 304H, 310S, 316, 316L, 316Ti, 321, 321H, 347, 347H, etc
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| Standard
| ASTM A270; ASTM A269; ASTM A312;ASTM A249,ect. |
| Size | OD: 13.5mm-323.9mm |
| WT: 1.2mm-8.8mm | |
| Length: 1m to 12m or as per customers’ requirement | |
| Advantage | Superior surface finish ,better mechanical property; more precise dimension; perfect inspection method and inspection equipment |
| Application | a) General service industries (petroleum, food, chemical, paper, fertilizer, fabric, aviation and nuclear) b) Fluid, gas and oil transport c) Pressure and heat transmission d) Construction and ornament e) Boiler heat exchangers f) Decorative usage (road lamp facilities, bridge handrail, expressway railing, bus stop, airport and gymnasium) boiler, auto parts, medical equipment, building materials, food industry |
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NDT: Eddy Current or Hydraulic Test
Heat Treatment: Bright Annealed
Quality Assurance: MTSCO is ISO 9001 & PED97/23/EC certified with 100% traceablity on all instrument Tube and material test reports (EN 10204/3.1B) accompany every shipment upon request.
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
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
