Zhejiang Seamless Pipe Co., Ltd.
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability | 1000 ton/month |
| Delivery Time | 2 weeks/container |
| Packaging Details | Bundles in woven bag/plywood case With plastic end caps |
| Material | 304L |
| Size | OD: 1/4" - 24" |
| WT | Sch5s - XXS |
| Length | Max.6M |
| Standard | ASTM A312, etc |
| Surface Treatment | Annealed & Pickled |
| Brand Name | SMLSCO |
| Certification | ISO PED |
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Product Specification
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram | Supply Ability | 1000 ton/month |
| Delivery Time | 2 weeks/container | Packaging Details | Bundles in woven bag/plywood case With plastic end caps |
| Material | 304L | Size | OD: 1/4" - 24" |
| WT | Sch5s - XXS | Length | Max.6M |
| Standard | ASTM A312, etc | Surface Treatment | Annealed & Pickled |
| Brand Name | SMLSCO | Certification | ISO PED |
| High Light | Power Plant TP304L Seamless Pipe ，ASTM A312 Seamless Pipe ，TP304L Seamless Pipe Sch40 | ||
Material Properties
TP304L features ultra-low carbon design to significantly enhance intergranular corrosion resistance. Its high Cr-Ni content maintains strength and toughness during continuous operation above 400°C. The heavy-wall Sch40 construction provides higher pressure tolerance, safely withstanding chloride corrosion and thermal cycling in power plant steam and high-pressure feedwater systems.
| Grade | TP 304; TP304H; TP304L;TP316; TP316L;TP321;TP321H; TP317L; TP310S; TP347H, S31803, 2205, 2507,... |
| Standard | ASTM A312, etc |
| Size | OD: 1/4" – 24" |
| WT: Sch5s – XXS | |
| Length:Max.6M | |
| Manufacturing Method | Seamless (Cold-drawn) |
| Surface Treatment | Annealed & Pickled |
| Length | Standard 6m / Customized available |
| Certification | ISO, PED certified |
Power Plant Suitability of TP304L
TP304L seamless pipes excel in power generation due to ultra-low carbon content (<0.03%) preventing intergranular corrosion during welding and 400–550°C service. Their 18% Cr/8% Ni composition maintains oxidation resistance in boiler feedwater systems, while Sch40 heavy-wall design withstands 1,500+ psi steam pressure. Critical advantages include:
Immunity to chloride stress corrosion cracking (SCC) in cooling water circuits
Consistent toughness for thermal cycling in superheater headers
PED/ASME B36.19 compliance eliminating post-weld heat treatment
These properties ensure 100,000+ hour service life in coal/gas-fired plants, reducing unplanned outages by 40% versus carbon steel alternatives in condensate return systems.
SMLSCO Quality Control System:
Three-tier quality control:
① Raw material PMI verification
② Full-length ET + UT during production
③ 100% dimensional inspection with per-pipe photo documentation pre-shipment
All data is traceable with available SGS/TÜV third-party reports, ensuring consistent performance and stable quality across batches.
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SMLSCO 304L Pipe Packaging Methods:
• LCL shipments: Plywood crates + end caps
• FCL shipments: Woven sacks with bundling + end caps
All wooden crates comply with automated US/EU warehouse requirements. Impact/moisture-proof packaging ensures transit safety, delivering shelf-ready products that eliminate customer reprocessing.
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 18 years of industry experience. We began by supplying cost-effective stainless steel seamless pipes but for now, Smlsco is more than pipes.With 18 years of growth, we have established production c... Zhejiang seamless pipe co.,ltd. (SMLSCO) is a specialized stainless steel piping systems provider with 18 years of industry experience. We began by supplying cost-effective stainless steel seamless pipes but for now, Smlsco is more than pipes.With 18 years of growth, we have established production c...
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