1) Material type: 304; 316L; 201; 202;430;410 .
2) Â Specification for stainless steel pipe
Sizes for round stainless steel pipe:
OD(mm):9.5, 12.7, 15.9, 17, 18, 19.1, 20, 21, 22.2, 23, 25.4, 28, 31.8, 35, 38.1, 48, 50.8, 60, 63.5, 63.5, 73, 76.2, 88.9, 101.6, 114, 127, 129, 133, 141, 159, 168, 175, 191, 203, 207.
Sizes for Square Stainless Steel Pipe:
 10X10 ; 12X12; 12.7X12.7; 14X14; 15X15; 16X16; 17X17; 18X18; 19X19; 20X20; 23X23; 25X25; 28X28; 30X30; 31.8X31.8; 35X35; 36X36;40X40;50.8*50.8;60X60;80X80;100X100.
Size for Regtangular Stainless Steel Pipe:
20X10 ;23X11;25X13;30X10; 30X15; 30X20; 36X23; 38X25;Â Â 40x10; 70x10; 90x10; 40x20; 50x25; 50x30; 60x30; 60x40; 73x43; 75x45; 80x40; 95x45; 50x100; 100x110; 100x120; 120x60; 150x50; 100x150; 40x210; 50x200; 120x130; 150x60.
3) Thickness(mm): 0.3 - 3.0.
4) Length: 6m, 5.8m or Cutting available upon request
5) Tolerance:
OD: +/-0.2mm
Thickness: +/- 0.05mm
Length: +/- 5mm
6) Standard: ASTM, Jin, GB.
7) Finish: 2B & Mirror & No.4 & Polish & Â Hairline & Satin Finish.
8) Application: Construction, upholstery, industrial instrument, automobile.
9) Inner packing: Plastic bag inner, outer: Weaving bag or carton, wooden crates, or according to customers' request.
 Steel Pipe for steel tube
| Standard | ASTM A554, A249, A269 and A270, A312 | |||||
| Material Grade | 201 ( Ni 0.8%), 202 (Ni 3.5%~4.5%), 301(Ni 5%) 304 (Ni 8%, Cr 18%), 316 (Ni 10%, Cr 18%), 316L (Ni10%~14%), Â |
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| Outer Diameter | 6mm--159mm | |||||
| Thickness | 0.3mm - 3.0mm | |||||
| Length | 6m or as customers' request | |||||
| Â Tolerance |
a) Outer Diameter: Â +/- 0.2mm | |||||
| b) Thickness: +/- 0.02mm | ||||||
| c) Length: +/- 5mm | ||||||
| Surface | 180G, 320G, 400G Satin / Hairline 400G, 500G, 600G or 800G Mirror finish |
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| Application | Decoration construction, upholstery, industry instrument | |||||
| Test | Squash test, extended test, water pressure test, crystal rot test, heat treatment, NDT | |||||
| Â Â Â Â Chemical Composition of Material |
 Material  Composition |
201 | 202 | 304 | 316 | 430 |
| C | ≤0.15 | ≤0.15 | ≤0.08 | ≤0.08 | ≤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 | 16-18 | 17-19 | 18-20 | 16-18 | 16-18 | |
| N | 3.5-5.5 | 4-6 | 8-10.5 | 10-14 | Â | |
| Mo | Â | Â | Â | 2.0-3.0 | Â | |
| Â 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) | <253 | <253 | <200 | <200 | ||
Steel Caps or pipe caps is the industrial Pipe Fittings for plugging pipes, welded on the pipe end or installed on outer thread of pipe end. It is used in sealing the pipeline. It has same function with pipe plug. Convex pipe cap includes: semisphere pipe cap, oval pipe cap, disc pipe cap and crown pipe cap.
Standards:ASME B16.9-2007 'ASME B16.25-2007,ASME B16.5-2007,EN10253-1-1999 EN10253-2-2007 EN10253-3-2008 EN10253-4-2008,DIN2605-1-1992 DIN2605-2-1995,JIS B2311-2009 JIS B2312-2009 JIS B2313-2009,GB/T12459-2005 GB/T13401-2005 GB/T10752-2005 ,SH/T3408-1996 SH/T3409-1996
SY/T0609-2006 SY/T0518-2002 SY/T0510-1998 ,DL/T695-1999 GD2000 GD87-1101,HG/T21635-1987 HG/T21631-1990
Size: 1/2"~78" DN15~DN1900
Wall Thickness:sch10, sch20, sch30, std, sch40, sch60, xs, sch80, sch100, sch120, sch140, sch160, xxs, sch5s, sch20s, sch40s, sch80s
Material:
Carbon steel: ASTM/ASME A234 WPB-WPC
Alloy steel: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP 911
Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H
Low-temperature stee: ASTM/ASME A402 WPL 3-WPL 6
High-performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70
Industrial proecesses:Bending,squeezing,pressing,forging,machining and more.
Applicants:Our pipe fittings are widely used in many industries,such as petroleum,power generation,natural gas,chemicals,ship building,papermaking, and metallurgy,etc.
Steel Caps
Steel Caps,Welding Cap,Butt Welding Cap,Carbon Steel Pipe Caps
HEBEI ZIFENG NEW ENERGY TECHNOLOGY CO.,LTD. , http://www.zifengpipeline.com