4 Inch Schedule 40 Stainless Steel Pipe 304/316 Seamless / Welded
Available in seamless and welded formats, Schedule 40 stainless steel pipes conform to ASTM A312 / A213 / A269 standards, grades 304 and 316 are engineered for medium-pressure applications across a wide range of industries—from food and chemical processing to structural and marine systems.
Difference between 304 and 316 stainless steel
| Property | 304 Stainless Steel | 316 Stainless Steel |
|---|---|---|
| Corrosion Resistance | Excellent for most environments | Superior, especially in chloride/saltwater exposure |
| Molybdenum Content | None | 2–3% molybdenum for added corrosion resistance |
| Applications | General purpose, indoor/outdoor | Marine, chemical, coastal, high-acid environments |
| Cost | More economical | Higher due to alloy content |
Stainless Steel Seamless Pipe Specification
|
Item |
Stainless Steel Pipe |
|
Standard |
ASTM A213,ASTM A312,ASTM A789,ASTM A790 |
|
Material Grade |
201/304/316/S31803/S32750 |
|
Outer Diameter |
0.1mm--219.1mm |
|
Thickness |
0.05mm - 20mm |
|
Length |
≤12000mm,or as per customer request |
|
Tolerance |
a) Outer Diameter: +/- 0.2mm b) Thickness: +/- 10% or as customer request |
|
Surface |
Satin / Hairline :180#, 320#Polish : 400# ,600# ,800# or Mirror surface; Pickling |
|
Application |
Decoration ,( Processed into railings, handrails, doors and Windows),medical,industry,etc |
|
Packaging |
Plastic bag/woven packing(please send details packing to us if you have other requirements) |
SS Tube Surface Finish
Welded pipes can be finished with polished, pickled, or brushed surfaces to meet sanitation and aesthetic requirements.
Details:2B,2D,BA,NO.1,NO.4,NO.8,8K,mirror,checkered,embossed,hair line,sand blast,brush.
Multiple specifications are available.
Stainless Pipe End Protection:Plastic Caps
Ends:Plain End, Beveled End, Threaded
Stainless Tube Photo
Stainless Steel Pipe Packing:
Details:Standard Seaworthy Package,or as requirement
Port:Tianjin,Qingdao,Shanghai port,or as required
| Container Size | 20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High) 24-26CBM 40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High) 54CBM 40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High) 68CBM |
Stainless Steel Pipe FAQ
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