Zhejiang Seamless Pipe Co., Ltd.
| Offshore Service Suitability | Suitable for chloride-containing marine environments |
| Delivery Time | 3 weeks/container |
| Supply Ability | 100 ton/month |
| Packaging Method | Inner cardboard packaging reinforced with outer plywood cases |
| Packaging Details | Plywood case/pallet |
| Connection Method | Socket Weld |
| Payment Terms | L/C,D/A,D/P,T/T,Western Union |
| Inspection Focus | PMI, dimensional inspection, surface inspection, penetrant test |
| Certification Focus | PED Certified, with ISO / AD2000 / NORSOK M-650 support |
| Material Category | Super Duplex Stainless Steel |
| Certification | ISO / PED / AD 2000 / Norsok M650 |
| Brand Name | SMLSCO |
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Product Specification
| Offshore Service Suitability | Suitable for chloride-containing marine environments | Delivery Time | 3 weeks/container |
| Supply Ability | 100 ton/month | Packaging Method | Inner cardboard packaging reinforced with outer plywood cases |
| Packaging Details | Plywood case/pallet | Connection Method | Socket Weld |
| Payment Terms | L/C,D/A,D/P,T/T,Western Union | Inspection Focus | PMI, dimensional inspection, surface inspection, penetrant test |
| Certification Focus | PED Certified, with ISO / AD2000 / NORSOK M-650 support | Material Category | Super Duplex Stainless Steel |
| Certification | ISO / PED / AD 2000 / Norsok M650 | Brand Name | SMLSCO |
Delayed delivery has long been a major challenge for stockists, distributors, and project procurement teams when sourcing stainless steel piping products. Leveraging ample ready-to-ship inventory, a stockpile of forged blanks, and a stable supply chain, SMLSCO offers customers shorter lead times, competitive pricing, and reliable supply assurance. The company specializes in four key product categories—seamless pipe, seamless tube, forged flanges, and fittings—enabling rapid responses to customer needs. We also provide comprehensive pre-sales, in-process, and after-sales services—ranging from technical support to order tracking—to assist customers in achieving more efficient procurement management.
| Attribute | Value |
|---|---|
| Product Name | F53 Forged Fitting SW Union |
| Product Type | Forged Fitting / Socket Weld Union |
| Material Grade | ASTM A182 F53 / UNS S32750 |
| Connection Type | Socket Weld (SW) |
| Size Range | NPS 1/8"-4" / DN6-DN100 |
| Pressure Rating | 3000 LBS / 6000 LBS / 9000 LBS, as required |
| Standard Compliance | ASME B16.11 / MSS-SP, as required |
| Certification | PED / ISO / AD2000 / NORSOK M-650 |
| Inspection | Dimensional Inspection, PMI test, Surface Inspection, Penetrant Test |
| Application | Offshore oil and gas piping systems, high-pressure branch connections |
SMLSCO offers quality verification services—including dimensional inspection, visual inspection, PMI testing, mechanical property testing, hardness testing, penetrant testing (PT), and third-party inspections—in accordance with standards and specific order requirements.
For F53 socket weld unions, inspections cover dimensional tolerances, socket structure, surface condition, material verification, product marking, and pressure ratings, ensuring compliance with ASME B16.11 and relevant procurement specifications.
F53 socket weld unions are primarily used in sectors served by global distributors, such as offshore oil and gas, seawater treatment, energy equipment, and high-pressure process piping. In offshore oil and gas environments, fittings must withstand factors like chloride-rich media, humid air, pressure fluctuations, and pipeline vibration; the F53 socket weld union offers a reliable solution for small-bore, high-pressure connection points.
| UNS Designation | C (max) | Si (max) | Mn (max) | P (max) | S (max) | Cr | Ni | Mo | N | Cu |
|---|---|---|---|---|---|---|---|---|---|---|
| S32750 | 0.03 | 0.8 | 1.2 | 0.035 | 0.02 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 | 0.5 max |
| 2507 | 0.03 | 0.8 | 1.2 | 0.035 | 0.02 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 | 0.5 max |
| S31803 | 0.03 | 1 | 2 | 0.03 | 0.02 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 | - |
| 2205 | 0.03 | 1 | 2 | 0.03 | 0.02 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 | - |
| S32205 | 0.03 | 1 | 2 | 0.03 | 0.02 | 22.0-23.0 | 4.5-6.5 | 3.0-3.5 | 0.14-0.20 | - |
| S32760 | 0.05 | 1 | 1 | 0.03 | 0.01 | 24.0-26.0 | 6.0-8.0 | 3.0-4.0 | 0.20-0.30 | 0.50-1.00 |
| Steel grade | Y.S (MPa) | T.S (MPa) | EL. (%) | HRB |
|---|---|---|---|---|
| S32750/2507 | ≥550 | ≥800 | ≥15 | ≤32 |
| S31803 | ≥450 | ≥620 | ≥25 | - |
| S32205/2205 | ≥450 | ≥620 | ≥25 | - |
| S32760 | ≥550 | ≥750 | ≥45 | ≤29 |
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
2006
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Zhejiang seamless pipe co.,ltd. (SMLSCO) is a specialized stainless steel piping systems provider with 19 years of industry experience. We began by supplying cost-effective stainless steel seamless pipes but for now, Smlsco is more than pipes. With 19 years of growth, we have establis... Zhejiang seamless pipe co.,ltd. (SMLSCO) is a specialized stainless steel piping systems provider with 19 years of industry experience. We began by supplying cost-effective stainless steel seamless pipes but for now, Smlsco is more than pipes. With 19 years of growth, we have establis...
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