GNEE is a stainless steel pipe manufacturer in China. We offer a wide range of sizes and types of 309 stainless steel pipe, widely used in various industries. In addition to 309 stainless steel, we also offer 304/304L, 316/316L, 321/321H, 347/347H, 904L, and duplex steel. 309 stainless steel seamless pipe is made from stainless steel billets through cold drawing and cold rolling processes, followed by heat treatment, to produce seamless pipes to specifications. For specific applications, we can also provide U-bends and bright annealed finished pipes upon request.
Our products include 309 seamless pipe, welded pipe, 309 round pipe, square pipe, rectangular pipe, 309 small and large diameter stainless steel pipe, and industrial/sanitary/decorative pipe.
TP309 309S Stainless Steel Seamless Pipe Specifications
| Standard |
ANSI B36.10M, ASME B31.1, ASTM A213, ASTM A249, ASTM A269, ASTM A312 |
|---|---|
| Grade |
1Cr20Ni14Si2, SUH309, X15CrNiSi20-12 |
| Surface Finish |
2B, BA, Customized, No. 1, NO. 4, No.8 |
| Length |
1000mm-12000mm (39.37-472.44in), Customized |
| OD |
6mm-2000mm (0.236-78.74in), Customized |
| WT |
0.5mm-50mm (0.020-2 in), Customized |
| Shape |
Customized, Hexagonal, Oval, Rectangular, Round, Square |
| Form |
Bend Pipe, Customized, etc., Seamless Pipe, Tubes, Tubing, Welded Pipe |
309 Stainless steel Round Pipes Composition Chart
| Grade | Iron | Chromium | Nickel | Manganese | Silicon | Carbon | Phosphorous | Sulfur |
| 309 Stainless Steel | 60 | 23 | 14 | 2 | 1 | 0.20 | 0.045 | 0.030 |
ASTM A312 TP309 Seamless Pipe Mechanical Analysis
| Yield Strength | Ultimate Tensile Strength | Elongation | Hardness | ||
| psi Minimum | (MPa) | psi Minimum | (MPa) | % Minimum | Maximum |
| 45,000 | 310 | 85,000 | 586 | 50 | 202 |
Quality Control System
Implementation:
Raw material PMI verification
In-process EC/UT non-destructive testing
100% dimensional inspection
All inspection records and photos are traceable, and SGS/TUV sampling reports are provided. Our three-level quality control system ensures consistent composition and performance for every batch of TP309 products, streamlining the incoming product inspection process for distributors.
Packaging and Marking:
Packaged in bales or laminated wooden crates, wrapped in plastic, and appropriately protected to ensure seaworthiness for transport, or as required.
Marking must comply with Specification A1016/A1016M. Marking must include information on whether the pipe is hot-finished or cold-finished, including but not limited to: standard, grade, size, heat number, and batch number.
