-
About us
Tianjin lefin Industrial
TIANJIN LEFIN STEEL GROUP containing Tianjin lefin Industrial Co.,Ltd. 、Tianjin lefin steel import & export Co.,Ltd and Tianjin Shengqifeng International Trading Co., Ltd. -
Products
Steel Pipe Processing
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard -
-
Service Capability
Guarantee Quality
Our steel pipes are suitable for oil, natural gas, shipbuilding, chemical industry, water conservancy, electrical, steel structure, construction and other related fields.
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard
Has rich experience in steel pipe processing, can be customized according to customer requirements according to the drawing and sample processing, assist in the development of new products.
cape verde AS/NZS 1163 HOLLOW SECTION
Product Description
NZS/AS1163 HOLLOW SECTION
SQUARE :50mm×50mm to 125mm×125mm
AS1163 is an Australian standard specification for welded and seamless steel pipes for structural use, which is widely applied in the fields of construction, engineering and manufacturing.
1. Standard Overview
• Standard Name:
AS 1163 "Structural steel Welded and Seamless hollow sections"
• Scope of application:
It is applicable to cold-formed or hot-formed welded steel pipes (straight seam or spiral welded) and seamless steel pipes, mainly used in building structures, mechanical manufacturing, fluid transportation and other fields.
• Classification:
It is divided into multiple categories based on manufacturing processes and strength grades:
- C250: Minimum yield strength 250 MPa.
- C350: Minimum yield strength 350 MPa.
- C450: Minimum yield strength 450 MPa (applicable only to cold-formed pipes).
2. Materials and Manufacturing
• Material Requirements:
Steel pipes are usually made of carbon steel or low alloy steel, and their chemical composition must comply with the standard requirements (such as the limits on carbon, manganese, sulfur and phosphorus content).
It is allowed to add trace elements (such as niobium and vanadium) to enhance strength and toughness.
• Manufacturing process:
• Welded pipes: High-frequency induction welding (HFW), submerged arc welding (SAW) or similar processes should be adopted, and the weld seams must be continuous and uniform.
• Seamless pipe: Produced through hot rolling or cold drawing processes, without welds.
Dimensional accuracy and surface quality need to be controlled during the manufacturing process.
3. Dimensions and Tolerances
• Outer diameter and wall thickness:
• Outer diameter range: Usually 21.3mm to 610mm (depending on the manufacturing process).
• Wall thickness range: 1.6mm to 12.7mm. There may be differences among different strength grades.
• Length:The standard length is 6 meters or customized according to customer requirements.
• Tolerance requirements:
• Outer diameter tolerance: ±1% or ± 0.5mm (take the larger value).
• Wall thickness tolerance: ±10% (welded pipes) or ±12.5% (seamless pipes).
• Ellipticity: Not exceeding 75% of the outer diameter tolerance.
4. Mechanical properties
The mechanical property requirements for different strength grades are as follows:
| GRADE | Yield strength (MPa) | Tensile strength (MPa) | Elongation (%, gauge length 5.65√S₀) |
| C250 | ≥250 | 340-500 | ≥20 |
| C350 | ≥350 | 430-600 | ≥18 |
| C450 | ≥450 | 500-650 | ≥12 |
• Test method: The tensile test is carried out in accordance with AS 1391, and the specimens are taken from the longitudinal or transverse direction of the steel pipe.
5. Surface Quality and Inspection
• Surface treatment:
The inner and outer surfaces of the steel pipe should be smooth, free from cracks, folds, scars and other defects.
Minor scratches or oxide layers are allowed, but they must not affect the performance in use.
• Testing Requirements:
• Non-destructive testing (NDT) : Welded pipes need to undergo ultrasonic or eddy current testing to ensure the quality of the weld seams.
• Hydrostatic test: Optional. The test pressure is determined through negotiation between the manufacturer and the customer.
• Dimensional inspection: Each batch of steel pipes needs to be sampled for inspection of the outer diameter, wall thickness and length.
6. Application fields
• Building structures: such as trusses, supports, columns, etc.
• Mechanical manufacturing: Used for mechanical components, hydraulic cylinder blocks, conveyor rollers, etc.
• Fluid transportation: Low-pressure fluid pipelines such as water, gas and oil (which must meet additional anti-corrosion requirements).
• Infrastructure: Large-scale projects such as Bridges, stadiums, airports, etc.
7. Comparison with other standards
• Comparison with ASTM A500 (USA) : C350 of AS1163 is similar to A500 Grade C, but there are slight differences in chemical composition and tolerance requirements.
• Compared with EN 10219 (Europe) : The European standard pays more attention to the performance of cold-formed tubes, while AS1163 covers a wider range.
8. Certification and Marking
• Certification Requirements: It needs to be certified by the Australia/New Zealand Joint Certification System (JAS-ANZ) or a third-party testing institution.
• Marking content: Each steel pipe should be marked with the manufacturer's name, standard number (AS1163), grade (such as C350), size and batch number.
9. Precautions
• Selection suggestion: Choose the appropriate grade based on load, environment and cost. C350 is a commonly used economical type.
• Anti-corrosion treatment: If used in a corrosive environment, galvanization, painting or the use of weathering steel are required.
10. Summary
AS1163 steel pipes have become the preferred material for structural engineering in Australia and its surrounding areas due to their strict dimensional control, diverse strength grades and reliable performance. When designing and using, it is necessary to combine specific application scenarios and refer to the original standard text to ensure compliance.
Address: Hengtai Road,Daqiuzhuang Town,Jinghai County,Tianjin,China
Mob: +8615122229899(whatspp)
Phone: +86 22 58171905
Fax: +86 22 58171902
E-mail:info@lefinsteel.com
Get company updates
Tianjin Lefin Industrial Co.,Ltd. All rights reserved City sub-station SEO www.300.cn