Tianjin Tianyingtai Steel Pipe Co., Ltd. is one of the most credible manufacturers and suppliers of ASTM A53 Sch40 GI Pipe for Construction & Scaffolding in China. Welcome to consult the quotation and import cheap ASTM A53 Sch40 GI Pipe for Construction & Scaffolding made in China here from our factory.
✦ Key Features & Advantages
✅ Superior Anti-Corrosion Performance - Zinc coating of 60-600 g/m² protects against rust, moisture, and harsh weather conditions
✅ High Structural Strength - Made from Q195/Q235/Q345 grade steel with tensile strength of 340-520 MPa
✅ Uniform Coating - Hot-dip process ensures complete coverage, inside and outside, including weld seams
✅ Easy Installation - Standardized dimensions compatible with international pipe fittings and threading
✅ Cost-Effective - Lower lifetime cost compared to PVC or stainless steel alternatives
✅ Eco-Friendly - 100% recyclable steel material, sustainable construction choice
Product Description
I.Product Basic Info:
| Name |
Steel Pipe Galvanized Round Pipe Hot Dipped Galvanized Steel Tube / GI Pipe |
| Surface | Galvanized (200-220g/m2 usual,can be request by customer) |
| Material |
Q195,Q215,Q235,Q345 |
| MOQ | 5 tons for normal size and material |
| WT | As customer's requests |
| Payment terms | TT deposit + the balanced against BL copy / LC or 100% LC at sight |
| Trade terms | FOB,C&F,CIF,EXW |
| Length | fixed or random,as customer request. |
| End Treatment | Plain(can be threaded,punch,shrink,extension... ) |
| Lead time |
within 7 days from stock with 6m length (stock pipe with our factory name in Chinese),20-25 days for customized pipe according to the qty |
2.Product Chemical Composition & Mechanical Properties :
| Grade | Chemical Composition | Mechanical Properties | ||||||
| C | Mn | Si | S | P | Yield | Tensile | Elongati | |
| Strength Mpa | Strenth Mpa | -on % | ||||||
| Q195 | 0.06-0.12 | 0.25-0.50 | ≤0.30 | ≤0.045 | ≤0.05 | ≥195 | 315-430 | ≥33 |
| Q235 | 0.12-0.20 | 0.30-0.67 | ≤0.30 | ≤0.045 | ≤0.04 | ≥235 | 375-500 | ≥26 |
| Q345 | ≤0.20 | 1.00-1.60 | ≤0.55 | ≤0.04 | ≤0.04 | ≥345 | 470-630 | ≥22 |
3.Product standard test:
| Q195≈ | Grade B,SS330 SPHC,S185 |
| Q235 ≈ | Grade D,SS400,S235 |
| Q345 ≈ | Grade 50/345,SPFC590,E/S335 |
Tianjin TianYingTai(TYT) Steel Pipe Co., Ltd is located in Jinghai, Tianjin, which is professionally engaged in steel production sales, steel processing, greenhouse engineering with accessories and export business. It has been experienced for 15 years so far. We have 13 production lines for various kinds of steel pipe, 10 processing production lines and 2 environmental production hot-dipped galvanizing lines. We not only can produce 450,000 tons of various sizes of ERW steel pipe, but also can produce deep processing pipe with 100,000 tons. Our annual production capacity of hot dipped galvanized steel pipe is 200,000 tons, capacity of greenhouse engineering material is 250,000 tons and highway column and guardrail is 200,000 tons.
Tianjin TianYingTai Imports & Exports Trade Co., LTD is our export company. We have achieved trading capacity 60,000 tons in 2016. Our products are widely used in agriculture, animal husbandry , chemical industry, machinery, construction, utilities, vehicle and other fields. Our customers are from Asia, the Middle East, the Southeast Asia, European Union and other countries.
Quality Inspection:
1.Our factory has its own "experimental testing center".CNAS Laboratory Accreditation Certificate (the second private enterprise to obtain this certificate)
2.Control quality strictly.The first pass is the quality inspection on the production line,The second pass is full inspection of the production quality .
3.We have got internationally recognized certificates, ISO, CE, LR,Philippine certificate,also support third-party testing,as SGS, BV, ect.
FAQ
Q1: What is the typical lifespan of your hot-dip galvanized pipes?
A: The service life depends on the environmental conditions and zinc coating thickness:
Rural/Suburban environments: 50+ years
Urban/Industrial environments: 25-40 years
Coastal/Marine environments: 15-25 years
Underground applications: 30-50 years
With our standard zinc coating of 200-300 g/m², customers can expect at least 20+ years of maintenance-free service in most applications.
Q2: Can you provide customized sizes and specifications?
A: Absolutely! We support full customization:
Outer Diameter: 21.3mm – 660mm (1/2" – 26")
Wall Thickness: 1.0mm – 22mm
Length: 1m – 12m (cutting to exact length available)
Zinc Coating: Adjustable from 60 g/m² to 600 g/m²
Ends: Plain, beveled, threaded, or with socket couplings
Marking: Custom logo and specifications available
For custom orders, please provide drawings or detailed specifications. Our engineering team responds with quotes within 24 hours.
Q3: What standards do your GI pipes comply with?
A: Our products are manufactured in compliance with major international standards:
ASTM A53 – Standard specification for pipe, steel, black and hot-dipped, zinc-coated
BS 1387 / BS 1139 – British standards for steel tubes and scaffolding
JIS G3444 – Japanese industrial standard for carbon steel tubes
EN 10255 – European standard for non-alloy steel tubes
GB/T 3091 – Chinese national standard for low-pressure fluid transmission
Mill Test Certificates (MTC) and third-party inspection reports (SGS, BV, TUV) are available upon request.
Q4: What is your minimum order quantity (MOQ) and lead time?
A:
MOQ: 5 tons for standard specifications; smaller trial orders negotiable
Lead Time: 5-10 days for standard orders, 15-25 days for custom orders
Sample Policy: Free samples available (customer pays shipping); sample production takes 5-7 days
Shipping Terms: FOB, CIF, CFR, EXW all supported; we can arrange sea freight, air freight, or courier
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