What is the typical delivery time?

Delivery is typically within 7-15 days after receiving the 30% TT deposit, with peak and off-season lead times both within 15 workdays.

Welded Hot Rolled Black Carbon Square Rectangular Hollow Section Pipe

Name: Welded Hot Rolled Black Carbon Square Rectangular Hollow Section Pipe
Brand: TIANJIN FRIEND STEEL TUBE CO., LTD.
SKU: 1984251475

Tianjin, ChinaTIANJIN FRIEND STEEL TUBE CO., LTD.

US$760.00-820.00

10 Tons

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Type

Welded

Technique

ERW

Model NO.

Q195/Q235/Q345

Material

Carbon Steel

Surface Treatment

Galvanized

Usage

Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose

Od

20mm*20mm~750mm*750mm

Thickness

1.0mm~20mm

Length

0.5m~12m

Surface

Black/Galvanized/Paint

Transport Package

Package by Bundle

Specification

Q195/Q235/Q345

Trademark

FRD

Origin

Made in China

HS Code

7306900

Production Capacity

30000tons

Key features

Wide Customization Range: OD: 20-750mm, Thickness: 1-20mm, Length: 0.5-12m, Surface: Black/Galvanized/Paint.

Multiple Material Grades: Available in Q195, Q235, Q345, SS330, SPHC, and other standard steel grades.

Superior Corrosion Resistance: Options include black, pre-galvanized (60-400g/m2), and hot-dip galvanized coatings.

Versatile Industrial Application: Suitable for construction, machinery, oil/gas drilling, boiler pipes, and fluid transport.

Strict Quality Control: 100% finished product inspection with ISO9001:2015 and ISO45001:2018 certified management.

Flexible Packaging Solutions: Bulk, steel strips, or plastic bags; optimized for 20'/40' container loading efficiency.

Fast Delivery Time: Standard delivery within 7-15 days after receiving the 30% TT deposit.

Established Manufacturer: Factory established in 2009 with 13,000 sqm plant area and 2 production lines.

Company profile

Importers and ExportersHigh Repeat Buyers Choice

TIANJIN FRIEND STEEL TUBE CO., LTD.

Tianjin, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: OEM Service Available CertifiedCustomization Options: Customization from Samples CertifiedExport Year: 1 Year CertifiedNearest Port: Tianjin portAverage Response Time: ≤1.36h

AI-Powered supplier vetting

SummaryTIANJIN FRIEND STEEL TUBE CO., LTD. is a China-based limited company established in 2009 and located in Tianjin. It offers steel pipe and scaffolding products, reports five production lines, annual scaffolding-tube productivity of 5,000 tons, and stated order lead times of within 15 working days in both peak and off-peak seasons. The supplier states that it can handle special customer requirements and customized processing using imported materials, and that it maintains a dedicated after-sales team. ISO 9001:2015 and ISO 14001:2015 certificates are reported. Export sales are stated at 71%–90%, with exporting beginning in 2021. However, several capabilities remain unverified, including contract manufacturing status, inventory services, overseas facilities or agents, ODM/OEM, SDK-related R&D, and customer case details. Audit information identifies TÜV Rheinland, but the evaluation result is recorded as 0 without an explained grading scale.

Supplier typeThe supplier is identified as TIANJIN FRIEND STEEL TUBE CO., LTD., a China-based limited company in Tianjin established in 2009. The records also describe it as a combined entity and, in one slice, as a trading company, while its product description identifies steel-pipe and scaffolding manufacturing activities.

CertificationsThe supplier reports ISO 9001:2015 and ISO 14001:2015 certifications. A TÜV Rheinland audit is also recorded with a report period from March 19, 2025 to March 18, 2026, although the audit result is listed as 0 without interpretation.

After-Sales capabilityThe supplier explicitly states that it has a devoted and enthusiastic after-sales service team. It also claims to provide systems for delivery, invoicing, settlement, transportation, and goods storage, supporting a broader service process.

Production capacityThe supplier reports five production lines and annual scaffolding-tube productivity of 5,000 tons, with stated order fulfillment within 15 working days during both peak and off-peak seasons. Its product description covers high-frequency welded pipes, galvanized steel pipes, and scaffolding products, providing explicit evidence of operating production capability.

Customization capabilityThe supplier explicitly states that special customer requirements can be handled and that imported materials can be used for customized processing. However, formal manufacturing-contract status and ODM/OEM service availability are marked unknown, so the evidence supports customization claims but not the broader service categories.

Product Q&A

Q:What are the available customization options for size and surface?

We offer extensive customization: OD from 20mm to 750mm, thickness from 1.0mm to 20mm, length from 0.5m to 12m, and surface treatments including black, galvanized, or painted finishes.

Q:Which steel material grades are available?

We supply various grades including Q195, Q235, Q345, SS330, SPC, S185, Q215, CS Type B, SPHC, SS400, S235JR, S235JO, S235J2, SS500, and ST52.

Q:What is the difference between pre-galvanized and hot-dip galvanized pipes?

Pre-galvanized pipes undergo degreasing, phosphorization, and drying before plating for uniform thickness. Hot-dip galvanizing involves dipping steel into molten zinc to form a metallurgically bonded alloy coating for superior corrosion protection.

Q:What are the payment terms and minimum order quantity?

The MOQ is 2MT for trial orders. Payment terms require a 30% TT deposit in advance, with the balance paid against the copy of the B/L or via irrevocable L/C at sight.

Q:How are the pipes packaged for shipping?

Packaging includes bulk for large OD, steel strips for small OD, plastic bags, or custom requirements. Trial orders can be 5 tons/size, with max lengths of 5.8m for 20' containers and 11.8m for 40' containers.