310S Stainless Steel Seamless Pipe

JILAIDA manufactures 310S Stainless Steel Seamless Pipe through a hot-rolled seamless process, available in outer diameters from 6mm to 89mm, wall thicknesses spanning 3mm to 30mm, and standard lengths between 3000mm and 10000mm. Custom cut-to-length, beveled ends, and special surface finishes are all within our scope. As a factory-direct China supplier, Ji lai da bridges the gap between industrial-grade metallurgy and competitive bulk pricing — making us a go-to sourcing partner for heat treatment equipment builders, boiler manufacturers, and petrochemical EPC contractors worldwide.

Product Parameter

Key Features

1 Low-Carbon Formulation for Enhanced Weldability

The defining advantage of 310S over standard 310 is its reduced carbon content (≤0.08%). After welding or prolonged exposure to the sensitization temperature range (450°C–850°C), 310S exhibits significantly lower susceptibility to chromium carbide precipitation at grain boundaries. This means welded joints retain their corrosion resistance without requiring post-weld solution annealing — a major cost and time saver in fabrication-heavy projects.

2 Sustained Oxidation Resistance in Air and Combustion Gases

With approximately 25% chromium and 20% nickel, the alloy forms a dense, self-healing chromium oxide layer that holds up under cyclic heating and cooling. In furnace atmospheres, flue gas streams, and oxidizing combustion environments, 310S outperforms 304H and 321H by a wide margin, making it the material of choice for radiant tubes, muffles, and retorts operating between 800°C and 1100°C.

3 Hot-Rolled Seamless Integrity for Demanding Service Conditions

Jiangsu Ji Lai Da's hot-rolled seamless manufacturing eliminates the longitudinal weld seam — the most common failure origin in welded tubular products. The resulting uniform grain flow and absence of fusion-zone weaknesses translate directly into higher allowable working pressures, better fatigue resistance under thermal cycling, and longer mean time between replacements. For end-users, this means fewer unplanned shutdowns.

4 Dimensional Consistency and Surface Quality

Every pipe from Jiangsu Ji Lai Da Nickel-Based Alloy Co., Ltd. undergoes straightening, pickling, and passivation after hot rolling. OD and wall thickness tolerances are controlled to ASTM A312 / EN 10216-5 standards. The pickled surface provides a clean, scale-free finish ready for immediate fabrication, while optional bright annealing delivers an even smoother ID/OD for sensitive fluid handling applications.

5 Global Trade Readiness and Supply Chain Reliability

As a China-based manufacturer with dedicated export operations, Ji lai da supports FOB Shanghai, CIF, and DDP terms. We handle full documentation packages — commercial invoice, packing list, certificate of origin, and EN 10204 3.1 MTC — streamlining customs clearance for buyers in Europe, Southeast Asia, the Middle East, and the Americas. Sample orders and third-party inspection are welcomed.

Product Application

Jiangsu Ji Lai Da Nickel-Based Alloy Co., Ltd. supplies 310S seamless pipe to a broad spectrum of high-temperature industries. Representative applications include: radiant tubes and furnace rollers in continuous annealing lines, superheater and reheater tube bundles for waste heat recovery boilers, ethylene pyrolysis furnace coils in petrochemical complexes, burner nozzles and flame tubes in industrial incinerators, thermocouple protection sheaths for temperature measurement in molten metal and glass tanks, exhaust manifolds and turbo piping in high-performance automotive and marine engines, and structural support members in ceramic kiln cars and heat treatment baskets.

Frequently Asked Questions

Q1: What distinguishes 310S from standard 310 stainless steel?

A: The key difference is carbon content — 310S contains ≤0.08% carbon versus up to 0.25% in standard 310. This lower carbon level dramatically reduces the risk of intergranular corrosion (sensitization) after welding, eliminating the need for post-weld annealing in most cases. For fabrication-intensive projects, choosing 310S from Jiangsu Ji Lai Da Nickel-Based Alloy Co., Ltd. can cut processing costs and lead times.

Q2: How do I place a trial order with Ji lai da?

A: Jiangsu Ji Lai Da Nickel-Based Alloy Co., Ltd. welcomes trial and sample orders. Simply send your required OD, wall thickness, length, and quantity — our sales team will return a proforma invoice within 24 hours. We accept T/T, L/C at sight, and can arrange air freight for urgent small parcels or sea freight for container loads.

Q3: What dimensional range does Ji lai da keep in ready stock?

A: Our regular inventory spans outer diameters from 6mm to 89mm, wall thicknesses from 3mm to 30mm, and lengths from 3000mm to 10000mm. Popular sizes in 310S are typically available for prompt dispatch. Non-standard dimensions are produced to order with competitive lead times — typically 15 to 30 days depending on quantity and complexity.

Q4: Is 310S suitable for sulfur-containing environments?

A: 310S offers good resistance to oxidizing sulfur atmospheres at elevated temperatures but is not recommended for strongly reducing sulfur environments where sulfidation attack can occur. For high-sulfur reducing conditions, our sales engineers at Jiangsu Ji Lai Da Nickel-Based Alloy Co., Ltd. can recommend more suitable nickel-based alloys from our product portfolio.

Q5: What quality assurance measures does Ji lai da follow?

A: Jiangsu Ji Lai Da Nickel-Based Alloy Co., Ltd. conducts 100% hydrostatic or eddy current testing on every seamless pipe before shipment. Chemical composition is verified via optical emission spectrometry, and mechanical properties are tested per lot. All results are documented in the Material Test Certificate (EN 10204 3.1) provided with each order. Third-party witness testing by SGS, TÜV, or Bureau Veritas is available at buyer's request.