Contact Supplier

Mr. Charles

Leave a message

Contact Now

Steel Pipe, Seamless, 8-inch SCH40, ASME

$500

1-0
Ton
$550

≥1
Ton

Payment Type:

L/C,T/T,Western Union

Incoterm:

FOB

Min. Order:

1 Ton

Transportation:

Ocean,Air

Contact Now

 Chat Now

Product Description

Product Attributes
Supply Ability & Additional Information
Packaging & Delivery

< >

Overview

Product Attributes

Model No.: 1/2inch-24inch

Brand: WH

Supply Ability & Additional Information

Packaging: BUNDLE ,CAPS ,

Productivity: 100000TONS

Transportation: Ocean,Air

Place of Origin: CANGZHOU

Supply Ability: 100000TONS

Certificate: ISO9001

Payment Type: L/C,T/T,Western Union

Incoterm: FOB

Packaging & Delivery

Selling Units:: Ton

Package Type:: BUNDLE ,CAPS ,

Engineers and procurement specialists seeking high-performance, customizable piping solutions now have access to a revolutionary manufacturing method—hot expanded seamless steel tubes. This advanced thermo-mechanical process transforms raw billets into premium-grade pipes with unmatched dimensional accuracy, mechanical integrity, and design flexibility. By heating carbon steel or low-alloy variants to precise temperatures between 900°C and 1200°C before applying controlled radial expansion, manufacturers achieve non-standard configurations that traditional cold-rolled or extruded techniques simply cannot match. The result? Lightweight yet durable tubing ideal for demanding applications across energy, infrastructure, and heavy industry sectors worldwide. Key Features What sets hot-expanded seamless steel tubes apart is their ability to simultaneously increase outer diameter while uniformly reducing wall thickness—from as thin as 4mm up to 40mm—without compromising structural consistency. Each pipe benefits from a refined grain structure, enhanced ductility, and uniform tensile strength along its entire length, thanks to optimized thermal gradients and mechanical deformation parameters. Available in nominal sizes ranging from DN 6" to DN 36", these products bridge the gap between off-the-shelf availability and highly specialized engineering requirements. With compliance to globally recognized standards such as ASTM A53, A106, API 5L, ASME B36.10M, and EN 10217, users gain confidence in traceability, regulatory alignment, and long-term performance under extreme conditions. Detailed Description The production cycle begins with a hollow billet formed via rotary piercing or pressure perforation, followed by precise heating to enable maximum plastic flow without cracking. At this critical stage, rollers or mandrels apply even radial force to expand the outer diameter while proportionally decreasing wall thickness—a unique combination of heat and mechanical action that improves formability and refines internal microstructure. Post-expansion cooling strategies like controlled quenching or tempering further enhance fatigue resistance, corrosion endurance, and toughness, making these tubes particularly suitable for subsea risers, boiler systems, and structural frameworks exposed to dynamic loads. While initially developed for carbon steel, ongoing innovations in furnace technology and alloy compatibility are now enabling broader adoption of stainless and low-alloy variants for diverse industrial environments. Applications These thermally expanded seamless steel tubes serve as essential components in offshore oil platforms, long-distance hydrocarbon pipelines, feedwater lines in thermal power plants, heat exchanger assemblies, and load-bearing structures in bridges and skyscrapers. Their capacity to deliver oversized sections with minimal weight makes them indispensable in confined spaces where space efficiency and load-bearing capability are paramount. Additionally, they function as superior precursors for welded pipe segments used in high-pressure service conditions, offering excellent weldability, consistent geometry, and proven durability over extended service life. Whether sourcing ultra-thin-walled tubing (down to 4mm) for compact heat exchangers or large-diameter pipes (up to 36 inches) for subsea projects, engineers gain access to a scalable, cost-effective solution backed by rigorous testing and real-world validation. Customer Feedback Procurement managers and technical leads from Europe, North America, and Southeast Asia consistently report significant advantages when adopting hot-expanded seamless steel tubes. One project lead in Germany remarked, “Switching to hot-expanded tubes cut our lead time by nearly 40% for offshore rig components—without any loss in quality.” Another client in Canada highlighted the exceptional consistency in wall thickness over hundreds of meters: “We were able to automate our welding processes seamlessly because variation was minimal—even over extended lengths.” These testimonials reflect growing trust in thermal expansion as a mature, reliable, and economically efficient alternative to conventional seamless pipe manufacturing methods. Frequently Asked Questions How does hot expanded Seamless Steel Pipe differ from cold rolled pipe? Hot expansion occurs at elevated temperatures, allowing greater plastic deformation without inducing cracks or residual stresses, resulting in better formability, fewer defects, and improved mechanical properties compared to cold-working techniques. Is this process applicable to alloy steels? Yes—while most current applications focus on carbon steel, advancements in furnace control and material science now support the use of low-alloy and stainless variants for specialized environments. How does thermal expansion impact mechanical strength? When properly executed, the process refines the microstructure, enhancing tensile strength, toughness, and fatigue resistance—especially when combined with post-expansion heat treatments like quenching or tempering. Can custom dimensions be produced outside standard ranges? Absolutely—the flexibility of thermal expansion allows creation of bespoke sizes, including ultra-thin walls (as low as 4mm) and unusually large diameters (up to 36 inches), which are difficult or impossible to produce using traditional rolling methods. What certifications ensure quality and compliance? These pipes meet internationally recognized standards such as ASTM, ASME, and EN, ensuring traceability, quality assurance, and adherence to safety regulations across global markets.

Product Categories : Steel Pipe > Seamless Steel Pipe

Home > Products > Steel Pipe > Seamless Steel Pipe > Steel Pipe, Seamless, 8-inch SCH40, ASME

Email to this supplier

*Subject:
*To:

Mr. Charles
*email:
*Message:

Your message must be between 20-8000 characters