Loading Port:Tianjin
Payment Terms:TT OR LC
Min Order Qty:1 m.t.
Supply Capability:1000 m.t./month
Stainless Steel Pipe
Name | Stainless Steel Seamless & Welded Tube &Pipe | |||||
Items | Square tubes, round tubes, oval pipes, special shaped pipes, empaistic pipes, fittings | |||||
Standard | ASTM A554, A249, A269 and A270 | |||||
Material Grade | 201: Ni 0.8%~1% | |||||
202: Ni 3.5%~4.5% | ||||||
304: Ni 8%, Cr 18% | ||||||
316: Ni 10%, Cr 18% | ||||||
316L: Ni10%~14% | ||||||
430: Cr16%~18% | ||||||
Outer Diameter | 9.53mm--159mm | |||||
Thickness | 0.3mm - 3.0mm | |||||
Length | 6m or as customers' request | |||||
Tolerance | a) Outer Diameter: +/- 0.2mm | |||||
b) Thickness: +/- 0.02mm | ||||||
c) Length: +/- 5mm | ||||||
Surface | 180G, 240G, 320G Satin / Hairline 400G, 600G Mirror finish | |||||
Application | handrail,railing, staircase, weldmesh screen,door,window, balcony,fence,bench,furniture,etc | |||||
Test | Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT | |||||
Chemical Composition of Material | Material
Composition | 201 | 202 | 304 | 316L | 430 |
C | ≤0.15 | ≤0.15 | ≤0.08 | ≤0.035 | ≤0.12 | |
Si | ≤1.00 | ≤1.00 | ≤1.00 | ≤1.00 | ≤1.00 | |
Mn | 5.5-7.5 | 7.5-10 | ≤2.00 | ≤2.00 | ≤1.00 | |
P | ≤0.06 | ≤0.06 | ≤0.045 | ≤0.045 | ≤0.040 | |
S | ≤0.03 | ≤0.03 | ≤0.030 | ≤0.030 | ≤0.030 | |
Cr | 13-15 | 14-17 | 18-20 | 16-18 | 16-18 | |
Ni | 0.7-1.1 | 3.5-4.5 | 8-10.5 | 10-14 | ||
Mo | 2.0-3.0 | |||||
Mechanical Property | Material Item | 201 | 202 | 304 | 316 | |
Tensile Strength | ≥535 | ≥520 | ≥520 | ≥520 | ||
Yield Strength | ≥245 | ≥205 | ≥205 | ≥205 | ||
Extension | ≥30% | ≥30% | ≥35% | ≥35% | ||
Hardness (HV) | <105 | <100 | <90 | <90 | ||
Definition of stainless steel(Adopted form Wikipedia)
In metallurgy, stainless steel, also known as inox steel or inox from French "inoxydable",
is defined as a steelalloy with a minimum of 10.5% to 11% chromium content by mass.
Stainless steel does not readily corrode, rust or stain with water as ordinary steel does,
but despite the name it is not fully stain-proof, most notably under low oxygen, high salinity,
or poor circulation environments. It is also called corrosion-resistant steel or CRES
when the alloy type and grade are not detailed, particularly in the aviation industry.
There are different grades and surface finishes of stainless steel to suit the environment
the alloy must endure. Stainless steel is used where both the properties of steel
and resistance to corrosion are required.
Surface Finish :
Surface finish | Characteristics and application |
No.2B | The surface brightness and flatness of no2B is better than no2D. then through a special surface treatment to improve its mechanical properties, No2B could nearly satisfy comprehensive uses. |
No.3 | Polished with abrasive belt of git#100-#200, have better brightness with discontinuous coarse stria, used as inner and external ornaments for building, electrical appliances and kitchen utensils etc. |
No.4 | Polished with abrasive belt of grit #150-#180,have better brightness with discontinuous coarse stria, but thinner than No3, are used as bathtub buildings inner and external ornaments electrical appliances kitchen utensils and food processing equipment etc. |
HL | Polished with abrasive belt of grit #150-#320 on the NO.4 finish and has continuous streaks, mainly used as buildings ornaments elevators, door of building, frontal plate etc. |
BA | Cold rolled, bright annealed and skin-passed, the product have excellent brightness and good reflexivity like mirror, kitchen apparatus, ornament etc. |
8K | The product have excellent brightness and prefer reflexivity can to be the mirror. |
Company Information
China National Building Materials Group Corporation (CNBM) was established in 1984 with approval of the State Council, and then became a Central Enterprise under direct supervision of State-owned Assets Supervision and Administration Commission of the State Council in 2003. It is in charge of the administrative affairs in China building materials industry. By the end of 2013, CNBM’s total assets exceeded RMB 360 billion, with over 130,000 employees, and 20 companies under direct management with 100% share control or majority control, among which 6 were listed companies, including 2 oversea listed. On July 7th, 2014, CNBM with revenue USD 41028 million, was ranked 267th on the ”World Top 500 Enterprises” by Fortune Magazine.
CNBM International Corp., established in 2004, is the business entity for trade and logistics of CNBM GROUP. It is in charge of the export of finished products as well as import of raw materials for its sister companies under the group. By the end of 2014, we have more than 30 business departments for different products and over 10 oversea offices for sales and customer service. CNBM –quality bar and special steel products regard quality as the essential factor leading to successful business. All the products are produced under the quality management system and tested by CNBM. Through years of effort, CNBM-quality bar and special steel products have built up great reputation in quality and service among customers all over the world.
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