Q235 Black Mild Steel Pipe Carbon Steel Pipe Building Material

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Product Description

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Overview & Basic Info

Model NO.
LK200504
Material
Carbon Steel
Surface
Black / Oiled / Painted
Section Shape
Square / Rectangular / Round
Grade
Q195, Q235, Q345
Length
3 - 12m
Capacity
500,000 Ton / Year
Usage
Pipeline Transport, Boiler Pipe, Machinery, Construction

Product Specifications

Steel Pipe Specification Details
Pipe Type Spec (mm) Thickness (mm) Spec (mm) Thickness (mm)
Rectangular 10*20 0.5-2.0 76*38 0.8-3.0
40*20 0.5-3.0 100*50 1.0-5.0
120*80 2.0-5.0 200*400 2.75-14
Square 20*20 0.5-2.0 100*100 2.0-5.0
80*80 1.7-5.0 400*400 2.75-14
Round 17-273 (3/8" - 10") 0.8-12" - -
Chemical Composition & Mechanical Properties
Grade C (%) Mn (%) Si (%) Yield (Mpa) Tensile (Mpa)
Q195 0.06-0.12 0.25-0.50 ≤0.30 ≥195 315-430
Q235 0.12-0.20 0.30-0.67 ≤0.30 ≥235 375-500
Q345 ≤0.20 1.00-1.60 ≤0.55 ≥345 470-630
Carbon Steel Pipe
Black Mild Steel Pipe

Production Excellence

Processing Lines

Equipped with advanced processing lines to satisfy various customized requests. We provide a one-stop producing and processing service.

Professional Staff

Over 400 skilled workers and 100+ professional staff members dedicated to providing perfect service and quality products.

Test Center

Our in-house experimental test center ensures stringent cost and quality control for every batch produced.

Production Facility
Testing Center
Steel Pipe Processing
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Frequently Asked Questions

Q1: Are you a professional steel pipe manufacturer?
Yes, we are an OEM and ODM manufacturer with over 20 years of experience in producing and exporting steel pipes, including galvanized and hollow sections.
Q2: Can I request samples before placing a bulk order?
Certainly. We provide free samples (20cm length). You only need to cover the basic shipping costs to evaluate our product quality.
Q3: How do you ensure the quality of your products?
We operate an independent testing center where we conduct daily chemical composition analysis, mechanical property tests, and cosmetic inspections for all products.
Q4: What is the typical delivery timeframe?
For regular stock sizes, we guarantee delivery within 3 business days. For customized OEM orders, the typical lead time is 20-30 days.
Q5: Do you support online or remote factory inspections?
Yes, we welcome physical visits and also support live video inspections via ZOOM to help you verify our production facilities.
Q6: What are the available payment options?
We typically accept T/T (30% deposit), Western Union, and L/C at sight. Negotiable payment options are available for long-term partners.

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