Seamless Fitting Full Specification
1. Product Overview
We supply high-quality Seamless Fitting, strictly complying with international standards. Our Seamless Fitting features no welding seam, high structural strength, excellent pressure resistance and temperature resistance, widely used in various high-pressure, high-precision industrial pipeline systems, suitable for global export.
2. Detailed Product Specifications
- Product Name: Seamless Fitting
- Executive Standards: ASME B16.9, GB/T 12459, EN 10253-2
- Material Grade: Carbon Steel, Stainless Steel, Alloy Steel (A105, 304/304L, 316/316L, F11, F22, 20#, 16Mn) — all materials meet international material quality standards, with complete material test reports (MTC), featuring high strength and good wear resistance.
- Product Type: Seamless Elbow (45°, 90°, 180°), Seamless Tee (Equal Tee, Reducing Tee), Seamless Reducer (Concentric Reducer, Eccentric Reducer), Seamless Cap (all types comply with international structural design requirements, no welding seam, uniform wall thickness and stable performance).
- Size Range: NPS 1/2″ – 24″, DN10 – DN600 (dimensional accuracy meets international standard requirements, with strict dimensional inspection, ensuring tight connection and stable pressure bearing).
- Pressure Rating: Class 300 – 2500; PN25 – PN160 (pressure-bearing performance meets international safety standards, suitable for high-pressure, high-temperature pipeline systems).
- Connection Method: Welded (Butt Weld, Socket Weld), Threaded (NPT, BSP) — connection strength and sealing performance comply with international specifications, adapting to high-pressure working environments and preventing leakage.
- Surface Treatment: Anti-rust oil coating, pickling passivation (for stainless steel), galvanizing (optional) — surface treatment meets international environmental protection and anti-corrosion requirements, extending service life in harsh environments.
- Application Scenarios: Petroleum refining, chemical engineering, power plant, aerospace, offshore oil and gas, high-pressure pipeline systems, boiler pipelines, and other high-demand industrial fields; suitable for high-pressure, high-temperature, and high-precision working conditions.
3. Key Dimensions (ASME B16.9, Unit: mm)
| NPS | DN | Outside Diameter (OD) | Wall Thickness (WT) | Elbow Radius (R) | Pressure Rating (Class) |
| 1/2″ | 15 | 21.3 | 4.0 | 38.1 | 300/600 |
| 1″ | 25 | 33.7 | 5.0 | 60.3 | 300/600 |
| 2″ | 50 | 60.3 | 6.0 | 101.6 | 300/600/900 |
| 4″ | 100 | 114.3 | 8.0 | 203.2 | 300/600/1500 |
| 6″ | 150 | 168.3 | 9.0 | 304.8 | 600/1500/2500 |
4. Export Marking
- Product Name: Seamless Fitting
- Size: NPS/DN
- Pressure Rating: Class/PN
- Material Grade: A105/304/316L/F11/F22/20#/16Mn
- Executive Standard: ASME B16.9/GB/T 12459/EN 10253-2
- Heat No.: Heat Treatment Number (traceable)
- Manufacturer Mark
5. Packaging & Delivery
- Packing: Wooden case, plywood pallet (environmentally friendly materials); each Seamless Fitting is wrapped with moisture-proof paper and plastic film, coated with anti-rust oil to prevent collision, corrosion and scratches during transportation, ensuring the integrity of the seamless structure.
- Shipping Mark: Customizable English shipping mark, including product name (Seamless Fitting), size, quantity, gross weight, net weight, and destination port.
- Certificates: MTC (Material Test Certificate), ISO, Mill Test Certificate, CE (for European market), FDA (for American market) — all certificates meet import country requirements, especially suitable for high-pressure and high-temperature industrial applications.
- Lead Time: Standard specifications: 7-15 working days; Custom specifications/large orders: 15-30 working days.
- Storage: Store in a dry, ventilated, and clean warehouse, away from moisture, dust, and corrosive substances; avoid heavy pressure and collision to prevent damage to the seamless structure.
6. FAQ (Frequently Asked Questions, Export Focused)
- Q1: Do your Seamless Fitting comply with international standards? What does it include?
A1: Yes, all our Seamless Fitting strictly comply with international industry quality standards, including material composition verification, dimensional accuracy control, environmental protection production processes, pressure-bearing safety performance, and traceability of product quality. This ensures our products meet the import requirements of global markets and pass relevant inspections smoothly, especially for high-pressure and high-precision pipeline applications. - Q2: What is the advantage of Seamless Fitting compared to welded fittings? How to choose?
A2: Seamless Fitting has no welding seam, higher structural strength, pressure resistance and temperature resistance, suitable for high-pressure, high-temperature, and high-precision pipeline systems; welded fittings are cost-effective, suitable for large-diameter, low-medium pressure systems. Choose Seamless Fitting for high-pressure scenarios (e.g., petroleum refining, power plant pipelines); choose welded fittings for general low-medium pressure and large-diameter pipelines. Our Seamless Fitting fully meets international standards for high-performance requirements. - Q3: Can you provide custom size, type or material for Seamless Fitting?
A3: Yes, we support full custom services. We can produce non-standard sizes (beyond NPS 1/2″-24″/DN10-DN600), custom types (e.g., special angle seamless elbows, non-standard seamless tees), and custom materials (e.g., 904L stainless steel, alloy steel F91). All custom products still comply with international specifications, as long as you provide detailed technical requirements. - Q4: What is the minimum order quantity (MOQ) for Seamless Fitting? Do you provide samples?
A4: For standard specifications of Seamless Fitting, the MOQ is 5 pieces; for custom specifications, the MOQ can be negotiated. We provide free samples (1-2 pieces) for quality inspection, and the customer only needs to bear the shipping cost. The sample lead time is 3-5 working days. - Q5: How to ensure the quality of your Seamless Fitting?
A5: We have a strict quality control system: 1. Raw material inspection (material composition, mechanical properties, pressure resistance test); 2. Production process inspection (seamless forming quality, dimensional accuracy, heat treatment quality); 3. Finished product inspection (pressure test, non-destructive testing, wall thickness uniformity inspection); 4. All products are accompanied by MTC before delivery. - Q6: What payment terms and shipping methods do you accept for export orders?
A6: Payment terms: T/T (30% advance payment, 70% balance before delivery), L/C at sight, D/P, Western Union (flexible terms for long-term cooperative customers). Shipping methods: Sea freight (for large orders), air freight (for urgent orders), international express (for samples). - Q7: Can your Seamless Fitting be exported to Europe, North America and other regions? Do you have relevant certificates?
A7: Yes, our Seamless Fitting can be exported to Europe, North America, Southeast Asia, the Middle East and other global regions. We can provide MTC (Material Test Certificate), TUV, ISO and PED certificates required by the destination country, ensuring smooth customs clearance, especially for high-pressure industrial orders.