Underground Pile

Underground Pile

Brief Version

Underground pile is a core underground load-bearing structural pipe manufactured by Hebei Hengtong Pipe Fitting Group via mature JCOE LSAW welding technology. Widely used for building foundations, subway tunnels and slope support projects, it transfers upper building loads to deep stable soil layers effectively.

Our underground JCOE pipe covers outer diameter 457mm–1422mm, wall thickness 8mm–50mm with customizable lengths, supporting Q235, Q345, X42–X80 multiple steel grades, fully compliant with API 5L, ASTM A252, EN 10219 international standards. We provide complete anti-corrosion coating solutions including FBE, 3LPE and 3LPP to adapt to various complex underground geological environments. Featuring high bearing capacity, good geological adaptability and low construction cost, our underground pipe piles are ideal for both urban and offshore engineering projects.

Detailed Version

Product Overview

Underground pile serves as essential underground support structure in all civil engineering projects, mainly applied to building foundations, subway tunnels and slope stabilization works. These columnar tubular components are driven or buried underground to transfer superstructure loads down to deep, stable soil strata.

Hebei Hengtong Pipe Fitting Group specializes in the production of JCOE LSAW underground pipe piles. Our factory covers total land area of 150,000 square meter and workshop area of 30,000 square meter with total investment of 300 million RMB, located in Zhenggang Road Industrial Park, Yanshan County, Cangzhou City, the national professional pipe manufacturing base in Hebei Province. Benefiting from integrated Beijing-Tianjin-Hebei transportation network, we own complete three-dimensional sea, land and air logistics advantages:

Air transport: Beijing Capital International Airport, Tianjin Binhai International Airport, Jinan Yaoqiang International Airport

Sea transport: Huanghua Port, Tianjin Port

Land transport: Huanghua-Shijiazhuang Expressway, Tianjin-Shanwei Expressway, Cangzhou Railway Station, Tianjin Railway Station

We optimize delivery schedules to supply clients with cost-effective and fast shipment services globally.

Complete Product Specification Parameters

JCOE LSAW bare steel pipeline

Outer Diameter: 457mm-1422mm (18"-56")

Wall Thickness: 8mm-50mm

Single Length: 5800mm-12300mm

Optional Materials: Q235,Q345,X42,X46,X52,X56,X60,X65,X70,X80

Executive Standards: API Spec 5L(PSL1,PSL2), ASTM A252, ASTM A672, ISO3183

Annual Output Capacity: 150,000 tons/year

Anti-corrosion coated pipe

Outer Diameter: 219mm-1620mm

Single Length: 5800mm-12300mm

Anti-corrosion coating types & standards:

FBE/2FBE: CAN/CSA Z 245.20, DIN 30671

2LPE/3LPE: CAN/CSA Z 245.21, DIN 30670

2LPP/3LPP: DIN30678, NFA49711

Daily coating processing capacity: 1200 square meter per 12 working hours

Application Scope

Our JCOE steel pipes can be used as long-distance transmission pipelines for onshore & offshore oil, gas and liquid coal. They are also adopted as structural support pipes for offshore platforms, power stations and municipal city construction projects.

Common Underground Pile Construction Technologies

Precast pile construction: Drive prefabricated pipe piles into soil with diesel or hydraulic hammers, applicable for clay and sand layers; single pile bearing capacity can exceed 1500KN.

Cast-in-place pile construction: Procedures include bore drilling, hole cleaning, reinforcement cage installation and concrete pouring; controlled slurry density 1.15-1.25, bottom sediment thickness ≤50mm.

Pipe jacking special construction: Earth pressure balance pipe jacking maintains balanced chamber and ground pressure to prevent ground subsidence.

Strict quality control is implemented for all underground pipe piles regardless of construction methods. Our technical team offers professional support to solve on-site construction problems.

Core Advantages of Underground Pipe Piles

High bearing capacity: Suitable for deep soil layers, effectively improve foundation bearing capacity and reduce uniform building settlement, perfect for soft foundation ground.

Complex geology adaptability: Penetrate unfavorable soil layers, stable performance under high groundwater and variable foundation conditions, excellent horizontal load transfer and seismic resistance.

High mechanization degree: Fast construction speed with stable quality control; flexible cast-in-place process matches various pile diameters and depths.

Economical cost: Cut excavation and temporary support expenses, integrate load-bearing function to shorten overall construction period.

Eco-friendly performance: Low vibration and low construction noise, suitable for dense urban downtown construction projects.

FAQ

Q: What payment terms do you support?

A: Our regular payment term is 30% advance deposit for production, and the remaining 70% balance shall be paid before shipment. We also accept flexible negotiation of payment plans for large-volume long-term orders.

Q: What payment methods are available?

A: We accept T/T wire transfer and irrevocable Letter of Credit at sight, which are widely recognized in international steel pipe trade.

Q: What product certificates can you provide?

A: Our underground pipe piles have obtained CE, API 5L and PED certificates. Complete test reports, mill certificates and third-party inspection documents can be provided together with goods.

Q: Can you customize pipe sizes, steel grades and anti-corrosion coatings?

A: Yes. We offer full customization including outer diameter, wall thickness, single length, special steel grades and all types of anti-corrosion coating systems according to your engineering drawings and geological environment.

Q: How long is your production and delivery cycle?

A: Standard stock specifications can be delivered within 7-10 working days. Customized production orders take 15-30 days based on order quantity and processing requirements.

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