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ASTM A789 UNS S31803 Seamless Tube 2" Precision Tube Fast Delivery
ASTM A789 TPS31803 Seamless Tube 2" Precision Tube Fast Delivery
SMLSCO, established in 2006, is a specialized inventory service provider and solutions provider for stainless steel piping systems. We focus on inventory services, maintaining over 3,000 tons of stock to meet your rapid delivery needs.
Technical Specifications
Attribute
Value
Standard
ASTM A789, ASME SA789
Material
S31803 / S32205 (Duplex)
Stock OD Range
1/4" – 2" (6.35mm – 50.8mm)
Wall Thickness (WT)
Per standards / Client requirement
Process
Seamless, Cold Drawn, Bright Annealed (BA)
Inspection
100% Eddy Current Tested, PMI
Certifications
PED 2014/68/EU, ISO 9001, AD2000
Delivery Time
2 Weeks (For standard stock sizes)
Material Properties
S31803 is an exceptional duplex stainless steel combining the performance advantages of austenitic and ferritic steels. Its yield strength is nearly double that of traditional austenitic stainless steels.
S31803 exhibits exceptional resistance to chloride stress corrosion cracking, pitting, and crevice corrosion. It is an ideal choice for highly corrosive environments.
Application Scenarios
S31803 duplex stainless steel precision tubing offers high strength and outstanding corrosion resistance. It is widely used in:
Fluid conveyance systems for offshore oil and gas platforms
Heat exchangers and pressure vessels in chemical processing plants
Seawater desalination equipment
In these high-pressure, high-temperature environments with highly corrosive media, SMLSCO's S31803 seamless tubes ensure long-term stability and safety for pipeline systems.
Product Advantages
SMLSCO understands distributors' and stockists' core needs for efficiency and reliability. We offer the following advantages to streamline your procurement process and enhance cost-effectiveness:
Massive Inventory: SMLSCO maintain over 200 tons of S31803 seamless tube in stock. We cover the full range of standard sizes from 1/4" to 2", enabling rapid fulfillment of your orders.
2-Week On-Time Delivery: we commit to preparing and delivering standard stock items within 2 weeks, significantly shortening your project timelines.
Authoritative Certifications: All tubes supplied by SMLSCO are PED/ISO/AD2000 certified. We guarantee compliance with international quality standards.
Full Traceability: We provide comprehensive quality traceability documentation from raw materials to finished products, including Material Test Certificates (MTC) and 100% pre-shipment inspection reports.
Quality Control System
SMLSCO prioritizes quality above all. We have established a rigorous three-tier inspection system to ensure product compliance:
Sourcing only high-quality raw materials from certified suppliers like TSINGSHAN
Conducting dimensional and performance inspections at critical production stages
100% pre-shipment inspection covering dimensions and surface finish, with 100% eddy current testing for precision tubes
All inspections are meticulously documented and support third-party verification.
Frequently Asked Questions
Q1: What is the difference between S31803 and S32205?
A1: S32205 is an improved version of S31803, and the two grades are interchangeable in most applications. S32205 imposes stricter minimum requirements for nitrogen (N) and molybdenum (Mo) content, delivering more stable and superior corrosion resistance. SMLSCO's stock products typically meet the standards for both grades (S31803/S32205).
Q2: Are SMLSCO's precision tubes processed using the bright annealing (BA) method?
A2: Yes. All ASTM A789 precision seamless tubes supplied by SMLSCO undergo bright annealing treatment. This ensures smooth inner and outer surfaces with no oxide scale residue. It is highly suitable for instrumentation systems or fluid conveyance requiring high cleanliness standards.
Q3: How does SMLSCO guarantee fast delivery for S31803 tubes?
A3: We maintain substantial inventory of S31803 raw materials and semi-finished products in our warehouse, covering major dimensions. Upon order confirmation, we directly allocate stock from inventory and initiate rapid inspection and packaging. We ensure all processes are completed within 14 days for on-time shipment. SMLSCO truly delivers "Steel in Stock. Delivered on the Dot."
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
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...
