321,321H,1.4541 Stainless steel tube
Product Name : 321 stainless steel tube
Steel Grade : 300 series
321 austenitic stainless steel has good corrosion resistance in the atmosphere, which is widely used in petrochemical, electric power, bridge and automobile industries.But the “rust” of stainless steel is not absolute, because of the special service environment, stainless steel corrosion will occur.The medium concentration, pH value, temperature and other factors will have a great impact on the corrosion resistance of stainless steel.For example, in the sensitization temperature range of 450~850℃ for a long time, stainless steel will occur intergranular corrosion. The mechanism is that C combines with Cr at the grain boundary to form Cr23C6 and precipitates, which reduces the content of Cr at the grain boundary. This is the so-called “poor chromium”.Cr is one of the main elements to inhibit intergranular corrosion. When the content of Cr at grain boundaries is lower than 12%, the probability of intergranular corrosion will increase.
Seamless Pipe Spec.
Seamless Pipe Types Grades Standards Sizes
Heat Exchanger TP304,TP304H,TP316,
ASTM A213,ASME SA213,
Boiler Tube TP304H,TP310H,
ASTM A213, ASME
Marine Tube/Pipe TP304H,TP304L,
ASTM A312, A269,
JIS G3459 with cetification of ABS,BV,CCS,
DNV,GL,LR and RINA,etc.
Instrumentation Tube TP304,TP304L,
General Tubes & Pipes TP304,TP304L,
Duplex Tubes/Pipes S31803; S32205,
ASTM A789,ASTM A790 OD: 10.0-273mm
ASME SB163, ASTM B163,
ASME SB423, ASTM B423,
ASME SB407, ASTM B407,
ASME SB668, ASTM B668
stainless seamless Pipe
Seamless Size：OD 6-830MM/WT 0.5-45MM
Advantage of Jianglin Seamless Pipe
All about the detail of seamless pipe production.
All of Jianglin raw seamless pipe raw billet are from famous mills like Walsin , Yongxing etc . And
We have advanced NDT equipments for the tests such as Eddy Current test, Ultrasonic test , Hydraulic test and so on . We have ISO 9001 and PED certificate , and the Third Party Inspection Certificates such as TUV , BV , Lloyd’s , SGS , etc , also can be provided according to customers’ requirements .
Each and every pipe will be safely packed into a professional export wooden box. after ordering, our logistics team will check and customize the box to fit into containers.
stainless seamless Tube
Seamless Size: OD 6-830MM/WT 0.5-45MM
STAINLESS STEEL BRIGHT ANNEALED TUBE
Inner roughness Ra 0.4um
Specialized in oiled cold drawing, precision rolling & bright annealed, making the inner and outer pipe surface bright, the roughness can be reach Ra 0.4 um after our polishing process.
Bright annealing process make the tube inside and outside surface cleaner, meanwhile, this process can guarantee good mechanical property of nickel alloy and super alloy.
For precise stainless seamless tube, each and every tube will be packed into a respective plastic bag, and guarantee the delivery safety.
Quality control is our best advantage
We not only test the raw material chemical composition, but also the intergranular test to guarantee the stable structure.
All of our pipes and tubes will be straightened based on standards. TIR is highly guaranteed.
For precise tube and pipes, we not only stick to standards, but also accept customized tolerance preference.
X Ray test
For welded pipe, we invest greatly on X ray test lab, just want to guarantee all our product meet clients requirement
Surface roughness test
For inner side and outer side surface roughness, we will test it for clients and synchronize all the pictures.
For stainless steel tubes, we have a high requirement on tube line marking, tube package.
with best clients from all over the world
Exhibition all over the world
Package & Loading
With years of experience，we provide different packing and loading method， from basic packing， to wooden box，and we also provide nest packaging.
We commit to respond every inquiry within 10 hours on week days
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