Carbon Steel Triangular Tube Thick Wall Heavy Duty Engineering Structure Tube

• Overview
• Product Description
• Specification
• PRODUCT DETAILS

Overview

Basic Info.

Model NO.	customization
Type	Customization
Technique	Cold Drawn
Material	Carbon Steel
Surface Treatment	Black
Usage	Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
Section Shape	Round
Brand	Shandong Jingshang
Product Name	Special Profile Steel Tube
Advantage	Quality+Competitive Price+Professional Service
Surface	Bare Pipelines, Rust Proof Coating
Delivery Time	7-21 Days
Transport Package	Standard Export Sea Suitable Packaging
Specification	customizable
Trademark	Original factory
Origin	Liaocheng, Shandong, China
Production Capacity	20000tons

Product Description

Product DescriptionJingshang special-shaped steel pipes are our core product line of precision non-standard steel pipes, featuring non-circular cross-sections that distinguish them from traditional round steel pipes. Manufactured via advanced cold drawing/cold rolling combined with bright annealing processes, these pipes adhere to stringent dimensional and performance control standards, and are fully customizable in terms of materials and specifications. They are widely applied in high-end scenarios such as machinery manufacturing, automotive industry, construction, and chemical engineering, serving as a critical component for precision engineering and structural applications.

Specification

Product Name	Special Shaped Steel Tube
Standard	ASTM A106 ,ASTM A53 ,ASTM A179, ASTM A210 ,ANSI B36.10, GB 5310,GB6479,GB9948,GB/T17396GB 3087, GB/T 8162 ,GB/T8163
Outer Diameter	customized according to customer requirements
Wall Thickness	1-50mm (Or customized according to customer requirements )
Length	6m,12m or as per customer's requirements
Packing	In bundles tied with steel stripes
Payment Term	T/T, L/C at sight
Delivery Time	Within 5-15 days after signing the contract or as your requirement
Delivery condition	Beveled or Plain end with varnish/2PP/2PE/3PE/3PP anticorrosive coatingas per clients confirmation ; With or without protecting caps as percustomer's requirements;with FBE internal coating for water steel pipes.
Material	A53(A,B),A106(A,B),Q345,16Mn, 10# 20#,45# S235JR, 1010,1020,1030,1040,1050,ASTMA252 Gr.2,Gr.3; ST37,ST42,ST52;Gr.B,X42,X46,X52,X56,X60,X65,X70, 4140 4120 4130 4142 35CrMo 42CrMo 1033 1320 1330 1527 1340 1345 20Mn 35Mn 40Mn 20Mn2 35Mn2 5115 5120 5135 5140 5145 5150 20Cr 30Cr 35Cr 40Cr 45Cr 512020CrMnTi 8620 20CrNiMo 4340 40CrNiMoA52100 GCr15 27SiMn 9260 60Si2Mn 9255 55Si2Mn 6150 50CrVA 440C 9Cr18Mo 3140 3135 40CrNi etc
Usage	Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose, According to Customer Requirements
Export to	Canada, USA, Argentina,Peru, Chile, Colombia, Brazil, Venezuela,Malaysia, Singapore, the Czech Republic, Australia, Myanmar, Kenya, South Africa, Spain, Italy, France, England, the Netherlands,Belgium, etc
Certificates	ISO9001; SGS; CE

PRODUCT DETAILSCore Categories & Materials1. Common Cross-Section Shapes: Rectangular, square, hexagonal, octagonal, elliptical, flat elliptical, D-shaped, triangular, plum-shaped, and other custom special shapes as per customer drawings.2. Main Materials: 20#, 45# carbon steel; Q345B low-alloy steel; 304/316L stainless steel; 20Cr, 40Cr and other alloy structural steels.3. Precision Standards: Dimensional tolerance of ±0.03-0.05mm, straightness ≤0.3mm/m, surface roughness Ra≤0.8μm, with bright, oxide-free surface and high smoothness.4. Length & Processing Services: Conventional 6m fixed length; customizable cutting, chamfering, tapping, and surface treatments including galvanizing, painting, and blackening are available upon request.

Performance Advantages• High Structural Efficiency: Superior bending and torsion resistance compared to round steel pipes, with lightweight design that saves 20%-30% of steel materials.• Secondary Processing Free: High dimensional accuracy and bright surface enable direct assembly, effectively reducing machining costs.• Stable Mechanical Properties: Enhanced strength and hardness after cold working, with excellent weldability and machinability.• Strict Quality Control: Material certificates and dimensional inspection reports are provided for each batch, and third-party re-inspection is supported.Typical Applications• Machinery Manufacturing: Precision shafts, gears, guide rails, hydraulic/pneumatic cylinder barrels;• Automotive Industry: Chassis components, exhaust pipes, seat frames;• Architectural Decoration: Special-shaped railings, curtain wall keels, artistic structural shapes;• Energy & Chemical Industry: Non-standard pipelines, heat exchanger parts, pressure vessel accessories.Export Advantages1. Global Compliance: Full international certifications including CE, SGS, ISO, REACH; smooth customs clearance for Asia, Europe, North America, Southeast Asia etc.2. Customized Delivery: Custom material, size and length; one-stop customs and logistics support, short lead time.3. Stable Supply: Own production base, full-process quality control, stable capacity for long-term overseas orders.

Founding Information
Established in 2001 in Liaocheng, Shandong, known as the "Steel Pipe Capital of China".

Industry Position
A pioneer and leader in Liaocheng's steel pipe industry, holding CE and QES (ISO) certifications.

Main Products
Hot-rolled seamless steel pipes, precision seamless steel pipes, cold-drawn seamless steel pipes, bearing steel pipes, hollow grouting anchor bolts, square steel pipes, special-shaped steel pipes, etc.

Application Fields
Suitable for construction engineering, machinery processing, automotive parts, agricultural production, military industry, shipbuilding, heat exchangers, boilers, etc.

Business Cooperation
Q1: What are your main cooperation models for seamless steel pipes?
A1: We provide flexible and diversified cooperation modes to meet diverse customer demands, mainly including long-term strategic procurement, customized OEM production, sample trial orders, and regional agency distribution. For large-volume buyers and long-term partners, we will design exclusive cooperation plans, and offer supporting benefits like priority production, fixed price protection and bulk order discounts.

Q2: What is the minimum order quantity (MOQ) for seamless steel pipe orders?
A2: For conventional standard seamless steel pipes, the MOQ is 1 ton for trial orders, and 5 tons for formal bulk orders. For customized products with special materials, non-standard sizes or special processing requirements, the MOQ can be adjusted flexibly based on specific production conditions, and we support small-batch trial orders for new cooperative customers.

Q3: How long is the production lead time for bulk seamless steel pipe orders?
A3: After receiving the advance payment and confirming all order details, the production cycle for conventional standard seamless steel pipes is 7-12 working days. For customized orders with special heat treatment, surface treatment or complex processing, the lead time will be 15-25 working days. We will send regular production progress updates to ensure on-time delivery as scheduled.Product Related
Q4: What materials and specifications of seamless steel pipes do you supply?
A4: We manufacture seamless steel pipes with premium materials including 10# steel, 20# steel, 45# carbon steel, Q355B low-alloy steel, 304/316 stainless steel. The conventional specifications cover outer diameter from 4mm to 620mm, wall thickness from 0.5mm to 100mm, and we can customize full range of non-standard sizes per customer drawings. Our products feature high dimensional accuracy, smooth inner and outer surfaces, no welding seams, excellent pressure resistance and stable mechanical properties, widely used in hydraulic systems, automobile parts, precision machinery, petroleum, chemical industry and other industrial fields.

Q5: Do you provide customized processing services for seamless steel pipes?
A5: Yes, we offer a complete set of customized processing services, such as fixed-length cutting, double-end chamfering, bending, drilling, tapping, surface galvanizing, phosphating, bright annealing, sandblasting and heat treatment. Customers only need to provide detailed product drawings, technical parameters or application scenarios, and our professional technical team will develop targeted production and processing solutions to meet your personalized needs.

Q6: What quality standards do your seamless steel pipes conform to?
A6: Our seamless steel pipes strictly comply with international and domestic authoritative standards, including ASTM A519, DIN 2391, EN 10305, GB/T 3639. We implement full-process quality control from raw material selection to finished product delivery, conducting strict tests such as ultrasonic flaw detection, hydrostatic pressure test, precision dimensional measurement and mechanical property analysis. We can provide material certification (MTC), quality inspection report and other relevant certification documents for each batch of products.After-Sales Service
Q7: How to deal with quality problems after receiving the seamless steel pipes?
A7: If you find any quality issues such as unqualified dimensions, surface defects, poor pressure resistance or inconsistent materials within the warranty period, please contact our after-sales team immediately with your order number, clear product photos and detailed problem description. We will respond within 12 hours and provide a formal solution within 24 hours, including free return, replacement, reprocessing or corresponding compensation. We also provide lifelong free technical consultation and support for all cooperative customers.