What are the common applications for these pipes?

They are widely used in furniture, building and construction, traffic and communication, oil/gas drilling, and machinery industries.

Black Square Tube ERW Carbon Steel Pipe

Name: Black Square Tube ERW Carbon Steel Pipe
Brand: Tianjin Tianyingtai Steel Pipe Co., Ltd.
SKU: 1902411352

Tianjin, ChinaTianjin Tianyingtai Steel Pipe Co., Ltd.

US$650.00

5 Tons

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Type

Welded

Technique

Cold Drawn

Model NO.

Q195 Q235 Q345

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

Transport Package

Bundle

Specification

21.3mm-325mm

Trademark

TYT

Origin

Tianjin

HS Code

730661

Production Capacity

500000ton/Year

Key features

Customizable Dimensions: Square sizes 10x10-400x400mm, lengths 0.3-13m as per customer request.

Multiple Surface Treatments: Options include pre-galvanized, hot dip galvanized, oiled, painted, or bare.

Wide Material Selection: Available in Q195, Q215, Q235, Q345 carbon steel grades.

International Standards: Complies with ASTM A53, BS 1387, GB/T 3091, and other global standards.

Versatile Applications: Suitable for construction, furniture, oil/gas drilling, and machinery industries.

Flexible Manufacturing: Supports Weld, ERW, Seamless, and Cold Drawn techniques with custom ends.

Company profile

Tianjin Tianyingtai Steel Pipe Co., Ltd.

Tianjin, China

Business Type: Manufacturer/Factory, Trading CompanyAverage Response Time: ≤10.07h

AI-Powered supplier vetting

SummaryTianjin TianYingTai (TYT) Steel Pipe Co., Ltd. is a combined steel manufacturing and processing supplier with stated experience of 18 years, 13 steel-pipe production lines, 10 processing lines, and two hot-dipped galvanizing lines. Its business scope covers steel rolling, metal structures and materials, metal-product R&D, and photovoltaic equipment sales. The supplier holds ISO9001:2015, ISO14001:2015, and ISO45001:2018 certifications, and reports quality assurance and inventory capacity. However, it has no available SDK, no overseas warehouse, showroom, agents, or branches, and no participation in offline trade shows. Manufacturing capacity is not fully verifiable because no valid contract with related subcontractors is reported. Financial records are referenced by year, but no substantive financial results are provided. Formal complaint-handling, corrective-action, and approved-supplier procedures are also absent from the evidence.

Supplier typeThe supplier is identified as a combined company engaged in steel production, sales, processing, greenhouse engineering, export, and related metal-product activities. Its stated business scope also includes steel rolling, metal structures, metal materials, metal-product R&D, and photovoltaic equipment and component sales, indicating a manufacturer with integrated processing and trading activities.

CertificationsThe supplier reports ISO9001:2015 and ISO45001:2018 certificates, as well as ISO14001:2015 certification and other certifications. These explicitly demonstrate certified quality, environmental, and occupational-health-and-safety management coverage.

Production capacityThe supplier reports 18 years of experience, 13 steel-pipe production lines, 10 processing lines, two environmental hot-dipped galvanizing lines, and inventory capacity. However, it also reports no valid manufacturing-capacity contract with associated subcontractors, while another record states seven production lines, so the full capacity profile is not entirely consistent.

Customization capabilityThe supplier explicitly provides steel processing, metal-structure manufacturing, metal-material manufacturing, and greenhouse engineering with accessories, supported by its own factory and processing center. These activities demonstrate relevant processing and product adaptation capability, although specific customization examples or limits are not provided.

Product Q&A

Q:What are the available square tube dimensions?

Square section sizes range from 10x10mm to 400x400mm, with thicknesses from 0.6mm to 12mm.

Q:Can the length of the tubes be customized?

Yes, lengths can be customized according to customer requirements, typically ranging from 0.3m to 13m or 5m to 16m.

Q:What surface treatments are available?

We offer pre-galvanized, hot dip galvanized, oiled, painted, or bare surfaces. Zinc coating is 50-150g/m2 for pre-galvanized and over 200g/m2 for hot dip galvanized.

Q:Which steel materials are used?

Materials include Q195, Q215, Q235, and Q345 carbon steel grades.

Q:What international standards do you follow?

We manufacture according to ASTM A53, BS 1387-1985, GB/T 3091-2001, ASTM A500, GB/T3094, DIN 2440, EN 10219, and JIS G3444.