GB/T 14291 Welded Steel Pipes For Ore Pulp Transportation
Price:
800-1000 USD/Tons
MOQ:
1 Tons
Delivery Time:
20-30days upon products
Brand:
TORICH
Product Description
GB/T 14291 L245J/BJ, L290J/X42J, L320J/X46J, L360J/X52J, L390J/X56J Welded Steel Pipes for Ore Pulp Transportation
GB/T 14291 welded steel pipes are designed for ore powder, ore pulp, mineral slurry, and dredging pipeline service where pipe strength, weld integrity, dimensional stability, and abrasion allowance are critical. The current GB/T 14291-2016 standard is titled “Welded steel pipe for ore pulp transportation”, was issued on August 29, 2016, and implemented on July 1, 2017. It applies to welded steel pipes used for ore powder, ore slurry, river dredging, and harbor dredging pipeline systems.
Specification
| Item | Description |
|---|---|
| Material | Carbon / low-alloy welded steel pipe |
| Standard | GB/T 14291-2016 |
| Grades | L245J/BJ, L290J/X42J, L320J/X46J, L360J/X52J, L390J/X56J |
| Manufacturing Process | ERW / HFW welded pipe; other welded processes by agreement |
| Outside Diameter | Common range: 114.3–1420 mm; project sizes by order |
| Wall Thickness | Common range: 4–25 mm; heavier wall by slurry pressure and wear allowance |
| Length | 1–12 m, customizable |
| Tolerance Range | According to GB/T 14291 order class; tighter OD / WT tolerance by agreement |
| Straightness | Controlled for field welding and pipe rotation stability; project requirement by purchase order |
| Surface Condition | Bare, black painted, anti-rust oil, external coating, internal lining or coating by agreement |
| Heat Treatment | As-welded or weld seam heat-treated, depending on grade, welding process, and purchaser requirement |
| Inspection | Chemical analysis, tensile test, weld inspection, dimensional inspection, hydrostatic test / NDT as required |
Main Features
- Defined yield-strength grades from 245 MPa to 390 MPa
The selected grades provide minimum yield strength levels of 245, 290, 320, 360, and 390 MPa, allowing buyers to match pipe grade with slurry pressure, support span, installation route, and wear allowance. - Controlled carbon equivalent for weldability
The listed slurry-pipeline grades typically use controlled carbon and microalloying. Publicly available grade data for these L245J–L390J slurry-pipeline steels shows maximum carbon around 0.22%, phosphorus ≤0.025%, sulfur ≤0.015%, and carbon equivalent limits such as CE ≤0.43% and Pcm ≤0.23%, supporting field weldability and repair welding control. - Suitable for abrasive slurry service with lining or coating options
Ore pulp and tailings pipelines are exposed to abrasion, erosion, corrosion, and velocity-related wear. Research on slurry pipelines shows that slurry velocity strongly affects erosion-corrosion severity, while mining-industry lining references emphasize internal barriers to reduce abrasion and corrosion of carbon steel pipelines. - Weld integrity inspection for long pipeline reliability
ERW/HFW pipe quality control commonly includes online NDT, flattening / flaring tests, hydrostatic testing, and weld-zone inspection. Automated ultrasonic systems are widely used for full-body and ERW weld inspection.
Our Advantages
| Buyer Concern | Our Control Method |
|---|---|
| Abrasion and early wall loss in ore slurry service | We recommend wall-thickness selection based on slurry concentration, velocity, particle size, pressure, and maintenance cycle. Internal lining, coating, or wear allowance can be specified for high-solid ore pulp lines. |
| Weld reliability during pressure cycling and field installation | We control weld seam quality through weld-zone inspection, dimensional checks, hydrostatic testing or NDT, and traceable heat documentation. |
| Grade selection uncertainty | We match L245J/BJ to L390J/X56J according to pressure class, route length, support condition, and welding requirements, avoiding unnecessary over-specification while keeping yield strength and toughness appropriate for slurry service. |
Executed Standards
| Standard System | Applicable Reference |
|---|---|
| GB | GB/T 14291-2016, welded steel pipe for ore pulp transportation |
| ASTM | ASTM A53 / ASTM A139 can be referenced for general welded carbon steel pipe comparison, not as direct grade equivalents |
| EN | EN 10217 series can be referenced for welded steel tubes for pressure purposes, subject to project comparison |
| GOST | GOST welded steel pipe standards may be reviewed for CIS-region project compatibility |
| JIS | JIS G3452 / JIS G3454 may be referenced for carbon steel pipe comparison, not direct slurry-grade equivalents |
| API | API 5L grade names such as X42, X46, X52, and X56 are useful for grade-strength comparison, but GB/T 14291 purchase should follow the GB grade and project specification |
Application Field
Ore-processing plant tailings slurry discharge pipeline — used to transport abrasive tailings slurry from the concentrator thickener or tailings pump station to the tailings storage facility.
Chemical Composition
| Grade | C % max | Si % max | Mn % | P % max | S % max | Cr % | Nb % max | V % max | Ti % max | CE max | Pcm max |
|---|---|---|---|---|---|---|---|---|---|---|---|
| L245J/BJ | 0.22 | 0.45 | 0.45–1.40 | 0.025 | 0.015 | — | 0.05 | 0.05 | 0.04 | 0.43 | 0.23 |
| L290J/X42J | 0.22 | 0.45 | 1.30–1.70 | 0.025 | 0.015 | 0.10–0.40 | 0.05 | 0.05 | 0.04 | 0.43 | 0.23 |
| L320J/X46J | 0.22 | 0.45 | 1.40–1.70 | 0.025 | 0.015 | 0.10–0.40 | 0.05 | 0.05 | 0.04 | 0.43 | 0.23 |
| L360J/X52J | 0.22 | 0.45 | 1.40–1.70 | 0.025 | 0.015 | 0.10–0.40 | 0.05 | 0.05 | 0.04 | 0.43 | 0.23 |
| L390J/X56J | 0.22 | 0.45 | 1.40–1.70 | 0.025 | 0.015 | 0.10–0.40 | 0.05 |
Mechanical Properties
| Grade | Minimum Yield Strength, MPa | Tensile Strength, MPa | Minimum Elongation, % |
|---|---|---|---|
| L245J/BJ | 245 | 415–760 | 22 |
| L290J/X42J | 290 | 415–760 | 20 |
| L320J/X46J | 320 | 435–760 | 18 |
| L360J/X52J | 360 | 460–760 | 16 |
| L390J/X56J | 390 | 490–760 | 14 |
TORICH Group, an one-stop service provider of raw materials engaged in raw material production, R&D and
trade, has 30+ years of experience in the market, exported to 56 +countries, and won good reputation and
credibility among domestic and foreign customers.
The company's production plant covers an area of over 10,000 square meters, with an annual production
capacity of 50,000 tons of materials and a comprehensive trading and warehousing capacity of 100,000 tons, which can satisfy customers' personalized needs for raw materials in terms of diversity and timeliness.
The group holds shares in more than ten domestic production entities, whose main products include
seamless steel pipes ( carbon steel and stainless steel), welded pipes ( carbon steel and stainless steel), pipe fittings ( carbon steel and stainless steel), titanium (titanium tubes, titanium rods, titanium cakes, titanium plates, etc.), aluminum (aluminum tubes, aluminum rods, aluminum die casting, aluminum casting, CNC machining), and CNC deep processing of metal materials such as tubes, rods, and casting parts.
Over the past 30 years, the company has been gradually developing new technologies and materials to meet
the growing needs of customers and various diversified needs, exporting to more than 56 countries and still
increasing the number of exporting countries, aiming to help customers to solve the demand for raw materials, and to facilitate one-stop purchasing for customers.
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
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Company
TORICH INTERNATIONAL LIMITED
Location
Suite 1604-3, Hongan Plaza, #258 Die Yuan Road, Yinzhou District, Ningbo City, China
Contact Person
Richard SHEN