Sihe Steel
Engineered to exact Australian & global standards with direct-from-mill logistical speed
Seamless structural build specialized for extreme offshore and gas fields. Certified to resist chloride-induced stress corrosion cracking in high-temperature subsea environments.
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High-integrity wholesale steel coiled tubes. Provides long, continuous run lengths that reduce high-risk mechanical joints and leakage points in process piping.
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High-precision seamless coil tubing offering high dimensional stability, uniform wall thickness, and bright annealed inner diameter surfaces for process instrumentation.
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Heavy-duty, corrosion-resistant coiled tubing solutions designed to meet the rigorous safety demands of oil, gas, and energy infrastructure projects.
View Details & Request QuoteSydney, as New South Wales' premier economic engine, continues to undergo intense industrial growth. From the major desalination expansions in Kurnell to the thriving food, beverage, and craft distillery hubs in the Inner West, the demands placed on fluid handling technology are increasingly stringent. Among these, the adoption of 304 stainless steel coil tubes has become a standard. Unlike standard straight pipes, coiled tubing minimizes the necessity for mechanical connections and welding joints, eliminating points of vulnerability where crevice corrosion and structural failures commonly occur.
The Sydney harbor environments and maritime infrastructure projects located throughout Port Kembla and Botany Bay expose piping components to constant airborne chlorides and moisture. This aggressive atmospheric environment requires high-performance austenitic stainless steel grades. ASTM A269 or ASTM A213 compliant Grade 304 (UNS S30400) provides an optimal balance between cost-efficiency and corrosion resistance, rendering it the standard selection for HVAC refrigeration loops, marine hydraulic lines, and chemical injection systems.
As a leading manufacturer of premium coiled tubing, Liaocheng Sihe Stainless Steel Material LTD operates under strict adherence to global engineering codes. Our manufacturing plants maintain six state-of-the-art production lines capable of drawing, welding, and heat-treating high-performance steel alloys.
Our production standards conform strictly to GB, ASTM, ASME, JIS, and EN frameworks. We understand that in the Australian heavy industry sector, compliance is non-negotiable. To ensure 100% reliability, every batch of our 304, 316L, 321, 317L, 309S, 310S, and Incoloy/Duplex coils undergoes a rigorous array of quality tests. This includes hydrostatic validation, flaring and bending tests, hardness assessment, and non-destructive eddy current testing.
Extending beyond 304 to Duplex, L-grades, and high-temperature alloys for demanding applications
Mill-direct bulk manufacturing of 304 seamless coils. Offers high concentricity and a smooth inner diameter surface finish, suitable for precision chemical feed lines.
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Low-carbon ASTM A789 grade stainless steel coil tubing, offering improved weldability and enhanced protection against intergranular corrosion.
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ASTM A269 general service coiled control tubes. Engineered for high performance under hydraulic pressures in control systems and automation equipment.
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High-integrity Duplex 2205 coiled tubing (9.52mm x 1.24mm). Specially engineered for offshore applications requiring high yield strength and resistance to marine pits.
View Details & Request QuoteWhen deploying coiled tubing systems in Australian projects, engineers must consider local compliance factors. In the food processing and beverage sector (a major industry in outer western Sydney areas such as Wetherill Park and Eastern Creek), materials must meet safety standards equivalent to AS 1528.1. This standard governs sanitary tubes for food processing applications. Additionally, for components contacting drinking water, compliance with AS 4020 is essential.
Liaocheng Sihe ensures compliance by maintaining clear material heat number traceability and offering full manufacturer test certifications (MTCs) to EN 10204 3.1. This level of quality documentation enables project managers in NSW to streamline the engineering approval process, meeting strict local regulatory requirements.
Procuring directly from our advanced facilities in Liaocheng, China, offers significant cost advantages compared to standard local distributors in Sydney. Local warehousing margins, internal shipping costs, and inventory holding fees can inflate costs by up to 40% for the end buyer.
By consolidating shipment routes from Chinese manufacturing ports directly to Port Botany, we can deliver high-quality steel coils to Sydney worksites at optimal pricing. We manage the supply chain from raw material purchase to final seaworthy reel packaging. This approach helps reduce freight handling risks and guarantees that the coils arrive free from physical deformation or contamination.
Our manufacturing facilities feature advanced online bright annealing technology. Under a protective hydrogen atmosphere, our tubes are continuously heat-treated to relieve internal stresses from the cold-drawing process without causing surface oxidation. This produces a bright, clean, and highly corrosion-resistant finish on both the inner and outer diameters.
In addition, our testing procedures include hydraulic pressure testing, mechanical flattening, flaring, tensile testing, and 100% eddy current defect detection. These procedures guarantee that each coil is certified to withstand high pressures, making them suitable for subsea oil and gas extraction, geothermal piping loops, and chemical process systems.
Tailored manufacturing options to meet the design specifications of Sydney industrial engineers
We manufacture coil tubes ranging from 0.125 inches (3.175 mm) to 1 inch (25.4 mm) in outer diameter, with custom wall thicknesses up to 3 mm to meet specific pressure requirements.
Utilizing high-purity hydrogen atmosphere heat treatment systems to maintain clean, smooth internal surfaces. This prevents scale build-up and ensures high corrosion resistance.
We package our products in heavy-duty wooden drums and wrap them in durable plastic sheets. This ensures that the products remain secure during international shipping and arrive on-site ready for installation.
Reliable performance across demanding commercial and chemical sectors in Australia
Meticulous manufacturing certifications ensuring compliance and peace of mind












Browse our complete list of high-specification stainless steel coils ready for export to Sydney
High-quality 304 stainless steel coiled tubing options, manufactured to custom lengths and wall thicknesses for diverse industrial projects.
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1/4-inch OD x 0.049-inch wall thickness seamless coiled tubing. Provides reliable pressure containment in control panel instrumentation.
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3/8-inch OD x 0.049-inch wall thickness Duplex 2205 and SA240 316 capillary tubing. Designed for high-integrity control systems in corrosive chemical environments.
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1/2-inch outer diameter tubing with a 0.049-inch wall thickness, supplied in long coils to reduce joints and leak risks in utility systems.
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Specialized coiled tubing designed for high-efficiency heat exchangers, featuring close-dimensional tolerance control to maximize thermal performance.
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ASTM A269 compliant 304 capillary tubes, offering high dimensional accuracy for precision laboratory, instrumentation, and sensor systems.
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Alloy 625 precision tubing, offering high corrosion resistance and thermal stability for demanding oil, gas, and aerospace applications.
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ASTM A312 compliant 316 heat exchanger pipes, offering reliable performance and corrosion resistance in marine and industrial processes.
View Details & Request QuoteClear answers concerning our premium coiled tubing supply chain, pricing, and technical parameters
Our prices vary based on raw material costs, ordered sizes, wall thicknesses, and production standards. We provide direct-from-mill pricing with optimized logistics to Port Botany. Please submit a request via our contact page to receive an updated pricelist tailored to your project requirements.
Yes, we require a minimum order quantity for international orders to optimize manufacturing and shipping costs. If you need smaller quantities for regional projects or resale trials, please contact our sales team to discuss available options.
Yes, we provide full quality documentation including Certificates of Analysis (COA), Certificates of Conformance (COC), Mill Test Certificates (MTC) to EN 10204 3.1, country of origin documents, and export insurance papers.
For standard samples, the lead time is approximately 7 days. For mass production and custom orders, the lead time is typically 20-30 days following receipt of deposit and technical approval. If your project schedule requires faster delivery, please let us know so we can coordinate options.
We accept bank wire transfers (T/T), Western Union, and PayPal. Our standard payment terms are a 30% deposit in advance, with the remaining 70% balance due against the copy of the Bill of Lading (B/L).
We stand behind our materials and manufacturing quality. We provide warranties covering material integrity and compliance with agreed specifications. Our technical team is available to assist with any issues or questions that arise during installation.
Our coiled tubes are wound on custom wooden reels, wrapped in protective plastic, and packed in reinforced crates. This packaging prevents physical damage, moisture exposure, and deformation during transit. Custom packaging requests can also be accommodated.
Shipping fees are determined by the shipment volume, weight, and selected shipping method (FCL or LCL sea freight). We will provide a detailed freight quote alongside your product quotation once order volumes are confirmed.
Get in touch with our engineering team for customized design support, technical parameter matching, and detailed factory-direct pricing for the Sydney market.