China Stainless Steel
stainless steel
highly processed pipe fittings
TeCarve’s Stainless Steel Highly Processed Pipe Fittings are designed to deliver precision engineering and versatile customization for demanding industrial and architectural applications. Using advanced processes such as flaring, reducing, CNC machining, laser drilling, precision cutting, and engraving, we ensure every fitting meets strict dimensional and performance requirements.
These processed fittings are manufactured from premium stainless steel grades including 304, 316L, 321, and Duplex alloys, offering superior corrosion resistance, durability, and long service life. Each component is tailored to customer specifications, with options for surface finish, wall thickness, and complex geometries.
Backed by rigorous quality inspections and compliance with global standards, TeCarve provides fittings that are not only functional but also add value in industries such as petrochemical, medical, high-purity food processing, construction, and custom fabrication.
Specifications
Capability by Standard
Markets: N. America — wrought stainless steel pipe fittings, custom-processed
| Processing Methods | Flaring (expanding), reducing (shrinking), CNC machining, laser drilling, cutting, engraving |
|---|---|
| Dimensions | Customized to drawing or client requirements |
| Surface Finish | Annealed, pickled, polished, mirror, or satin |
| Fitting Class (A403 Table 1) | S = seamless, no NDE required · W = welded, RT or UT · WX = welded, full RT · WU = welded, full UT |
| Tolerance Basis | Sizes/shapes per ASME B16.9 (butt-weld), ASME B16.11 (socket-weld & threaded), or MSS SP-79/83/95/97 as applicable by fitting type (A403 §12.1) — A403 itself sets no independent dimensional tolerance. Non-standard shapes furnished per Supplementary Requirement S58, confirmed against the customer drawing. |
- Processing Methods: Flaring (expanding), reducing (shrinking), CNC machining, laser drilling, cutting, engraving
- Available Grades: 304, 304L, 316, 316L, 321, 347, etc. (austenitic families per ASTM A403 Table 2)
- Surface Finish: Annealed, pickled, polished, mirror, or satin
- Tolerance Compliance: Sizes/shapes per ASME B16.9/B16.11 or applicable MSS SP standard (A403 §12.1), or the corresponding EN 10253-4/JIS B2311/GB/T 12459 clause; non-standard shapes confirmed against the customer drawing
Markets: Europe — butt-welding pipe fittings, custom-processed
| Processing Methods | Flaring (expanding), reducing (shrinking), CNC machining, laser drilling, cutting, engraving |
|---|---|
| Dimensions | Customized to drawing or client requirements |
| Surface Finish | Annealed, pickled, polished, mirror, or satin |
| Tolerance Basis | Per EN 10253-4 general fitting tolerance clause; exact figures confirmed against the customer drawing |
- Processing Methods: Flaring (expanding), reducing (shrinking), CNC machining, laser drilling, cutting, engraving
- Available Grades: 304, 304L, 316, 316L, 321, 347, etc. (austenitic families per ASTM A403 Table 2)
- Surface Finish: Annealed, pickled, polished, mirror, or satin
- Tolerance Compliance: Sizes/shapes per ASME B16.9/B16.11 or applicable MSS SP standard (A403 §12.1), or the corresponding EN 10253-4/JIS B2311/GB/T 12459 clause; non-standard shapes confirmed against the customer drawing
Markets: Japan, Southeast Asia — steel butt-welding pipe fittings, custom-processed
| Processing Methods | Flaring (expanding), reducing (shrinking), CNC machining, laser drilling, cutting, engraving |
|---|---|
| Dimensions | Customized to drawing or client requirements |
| Surface Finish | Annealed, pickled, polished, mirror, or satin |
| Tolerance Basis | Per JIS B2311 general fitting tolerance clause; exact figures confirmed against the customer drawing |
- Processing Methods: Flaring (expanding), reducing (shrinking), CNC machining, laser drilling, cutting, engraving
- Available Grades: 304, 304L, 316, 316L, 321, 347, etc. (austenitic families per ASTM A403 Table 2)
- Surface Finish: Annealed, pickled, polished, mirror, or satin
- Tolerance Compliance: Sizes/shapes per ASME B16.9/B16.11 or applicable MSS SP standard (A403 §12.1), or the corresponding EN 10253-4/JIS B2311/GB/T 12459 clause; non-standard shapes confirmed against the customer drawing
Markets: China domestic & Belt-and-Road — steel butt-welding pipe fittings, custom-processed
| Processing Methods | Flaring (expanding), reducing (shrinking), CNC machining, laser drilling, cutting, engraving |
|---|---|
| Dimensions | Customized to drawing or client requirements |
| Surface Finish | Annealed, pickled, polished, mirror, or satin |
| Tolerance Basis | Per GB/T 12459 general fitting tolerance clause; exact figures confirmed against the customer drawing |
- Processing Methods: Flaring (expanding), reducing (shrinking), CNC machining, laser drilling, cutting, engraving
- Available Grades: 304, 304L, 316, 316L, 321, 347, etc. (austenitic families per ASTM A403 Table 2)
- Surface Finish: Annealed, pickled, polished, mirror, or satin
- Tolerance Compliance: Sizes/shapes per ASME B16.9/B16.11 or applicable MSS SP standard (A403 §12.1), or the corresponding EN 10253-4/JIS B2311/GB/T 12459 clause; non-standard shapes confirmed against the customer drawing
Standards
→ Scroll right for full chemistry & mechanical data
| Grade | US (UNS) | EN (W.Nr.) | Japan (JIS) | China (GB/T) | C % (Max) | Si % (Max) | Mn % (Max) | P % (Max) | S % (Max) | Cr % | Ni % | Mo % | Tensile σb (Min.) | Yield σ0.2 (Min.) | Elongation (Min.) | Hardness (Max) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 304 | S30400 | 1.4301 | SUS304 | 06Cr19Ni10 | 0.08 | 0.75 | 2.00 | 0.045 | 0.030 | 18.0-20.0 | 8.0-10.5 | — | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 35% | ≤92 HRB / ≤215 HV |
| 304L | S30403 | 1.4307 | SUS304L | 022Cr19Ni10 | 0.030 | 0.75 | 2.00 | 0.045 | 0.030 | 18.0-20.0 | 8.0-12.0 | — | 485 MPa (70 ksi) | 170 MPa (25 ksi) | 35% | ≤92 HRB / ≤215 HV |
| 316 | S31600 | 1.4401 | SUS316 | 06Cr17Ni12Mo2 | 0.08 | 0.75 | 2.00 | 0.045 | 0.030 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 35% | ≤95 HRB / ≤215 HV |
| 316L | S31603 | 1.4404 | SUS316L | 022Cr17Ni12Mo2 | 0.030 | 0.75 | 2.00 | 0.045 | 0.030 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | 485 MPa (70 ksi) | 170 MPa (25 ksi) | 35% | ≤95 HRB / ≤215 HV |
| 321 | S32100 | 1.4541 | SUS321 | 06Cr18Ni11Ti | 0.08 | 0.75 | 2.00 | 0.045 | 0.030 | 17.0-19.0 | 9.0-12.0 | — | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 35% | ≤95 HRB / ≤215 HV |
| 347 | S34700 | 1.4550 | SUS347 | 06Cr18Ni11Nb | 0.08 | 0.75 | 2.00 | 0.045 | 0.030 | 17.0-19.0 | 9.0-13.0 | — | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 35% | ≤92 HRB / ≤215 HV |
- Standards Conformance: ASTM A403/A269/A270 · EN 10253-4/10217/10357 · DIN 2605/2615/2616 · JIS B2311/G3447 · GB/T 12459/13401
- Delivery Condition: Solution Annealed & Pickled (AP) / Bright Annealed (BA) / Polished, or as requested.
- Mill Test Certificate: 100% full material traceability with EN 10204 3.1 MTC provided with every shipment.
Features
• Precision deep-processing with CNC and laser technologies
• Wide range of stainless steel grades and finishes
• Fully customizable fittings to meet client drawings
• Enhanced durability and resistance to pressure and corrosion
• Petrochemical and oil & gas installations
• High-purity food & pharmaceutical processing pipelines
• High-precision machinery and equipment
• Construction, decoration, and architectural tubing
• Custom engineering and OEM projects
Applications
For fabricated fittings and custom manifold assemblies, learn how to verify our fabrication workshops, precision beveling, weld radiography, and dimensional CMM checks.
Quality Control
• Raw material certification and traceability
• CNC machining with dimensional inspection
• Laser drilling and engraving accuracy verification
• Surface finish and corrosion resistance testing
• Final inspection with client-specific standards
packaging
PVC Wrapping
& End Caps
Custom Barcoding
& Labeling
Anti-Corrosion
& Moisture Protection
Seaworthy Wooden Cases & Pallets
Processed Fittings Quality & Packaging Photos
Real factory, inspection, packaging and loading photos from TeCarve gallery pages.
Tailored Solutions, Timely Fulfillment
CUSTOMIZATION
& DELIVERY
Flexible Custom Manufacturing
We tailor highly processed stainless steel pipe fittings to customer drawings through the page's listed flaring, reducing, CNC machining, laser drilling, cutting, and engraving processes, with selectable grades and finishes.
Low MOQ & Rapid Prototyping
Small batch customization and sample production are supported, helping you shorten your development cycle and market entry.
Optimized Lead Time
Most orders ship within 10–25 days after deposit. Exact timing depends on product specification, required documentation, and order volume.
Global Logistics & On-Time Delivery
For processed fitting shipments to over 50 countries, seaworthy wooden cases and pallets protect machined parts while custom barcoding and labeling preserves drawing and batch identification.
Frequently Asked Questions
What types of stainless steel pipe fittings does TeCarve supply?
TeCarve supplies a complete range of butt-weld fittings: elbows (45°, 90°, 180°), equal and reducing tees, concentric and eccentric reducers, caps, stub ends, crosses, and weldolets. All conform to ASME B16.9, ASME B16.28, or MSS SP-43 dimensional standards.
What grades are available for stainless steel pipe fittings?
Fittings are supplied in grades WP304, WP304L, WP316, WP316L, WP321, WP347, and duplex WP2205/WP2507, conforming to ASTM A403 (wrought austenitic) and ASTM A815 (duplex and super duplex) specifications.
What size range do your stainless steel butt-weld fittings cover?
We supply butt-weld fittings from ½" (DN15) to 48" (DN1200) nominal pipe size in schedules 5S, 10S, 40S, and 80S. Large-diameter fittings and non-standard wall thicknesses are manufactured to project specifications and customer drawings.
What custom machining and processing services are available for pipe fittings?
Beyond standard fittings, TeCarve offers CNC precision-bore machining, custom face-to-face dimensions, flanged stub ends, post-weld heat treatment, and full NDE package (RT, UT, MT, PT) per ASME VIII, ASME B31.3, or EN 13480.
What documentation and certifications are provided with stainless steel fittings?
Every shipment includes EN 10204 3.1 (or 3.2 on request) Mill Test Certificates, dimensional inspection reports, heat treatment records, NDE test reports, and pressure test certificates. NACE MR0175/ISO 15156 compliance documentation is available for sour service piping.