Bench drill is a compact size of the pillar drill that is designed for drilling holes through materials including a range of woods, plastics and metals. They are suitable for smaller holes or work pieces and have moderate to high speeds. The dills always come with a belt driver that makes it possible to select different speed: High speed for wood and lower speed for metal. In order to suit different size of projects, the height and angle of bench is adjustable.
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Steel Pipe Knowledge: Detailed Explanation of Seamless Pipeline Implementation in 2013
**Steel Pipe Knowledge: Detailed Implementation of Seamless Steel Pipes in 2013**
Seamless steel pipes are widely used across various industries due to their high strength, durability, and resistance to pressure. Here is a detailed overview of different types of seamless steel pipes and their applications according to Chinese national standards.
1. **Seamless Pipe for Structural Use (GB/T 8162-2008)**
This type of pipe is designed for general structural and mechanical purposes. It is commonly used in construction and industrial machinery where high strength and reliability are required.
2. **Seamless Pipe for Fluid Delivery (GB/T 8163-2008)**
Used for conveying fluids such as water, oil, and gas, this pipe is ideal for pipelines and distribution systems. It ensures safe and efficient transport of liquids and gases under normal operating conditions.
3. **Seamless Tube for Low and Medium Pressure Boilers (GB 3087-2008)**
Manufactured from high-quality carbon steel, these tubes are used in low and medium pressure boilers for components like superheated steam tubes, boiling water tubes, and smoke tubes. They provide reliable performance in boiler systems.
4. **Seamless Pipe for High-Pressure Boilers (GB 5310-2008)**
These pipes are made from high-quality carbon steel, alloy steel, or stainless heat-resistant steel. They are suitable for high-pressure boiler applications, especially for heating surfaces in water-tube boilers.
5. **High-Pressure Seamless Pipes for Chemical Fertilizer Equipment (GB 6479-2000)**
Designed for chemical equipment and pipelines, these pipes can operate at temperatures ranging from -40°C to 400°C and withstand pressures up to 10–30 MPa. They are essential in the fertilizer and petrochemical industries.
6. **Seamless Pipe for Petroleum Cracking (GB 9948-2006)**
Used in petroleum refineries, these pipes are applied in furnace tubes, heat exchangers, and other critical components. Their high resistance to heat and corrosion makes them ideal for harsh environments.
7. **Geological Drilling Steel Pipe (YB 235-70)**
This type of pipe is specifically used for core drilling in geological exploration. It includes drill pipes, drill collars, core pipes, casing pipes, and sedimentation pipes, each serving different functions in drilling operations.
8. **Seamless Pipe for Diamond Core Drilling (GB 3423-82)**
Designed for diamond core drilling, these pipes are used in the manufacture of drill pipes, core bars, and casing pipes. They are known for their precision and durability in challenging drilling conditions.
9. **Oil Drilling Pipe (YB 528-65)**
This seamless pipe is used in oil drilling operations and is thickened at both ends. It comes in two types: sub-car wire and non-car wire, with specific connection methods to ensure secure and stable drilling.
10. **Classification Society Standards**
Various international classification societies such as DNV, Lloyd’s Register, German Lloyd, ABS, BV, RINA, and NK have established specifications for shipbuilding and offshore structures. These standards ensure that seamless pipes meet strict safety and quality requirements.
11. **Seamless Tube for Automobile Half-Axle Casing (GB 3088-82)**
Made from high-quality carbon and alloy structural steel, these tubes are used in automotive axle bushings and drive axle housings. They offer excellent strength and wear resistance.
12. **High-Pressure Fuel Pipe for Diesel Engines (GB 3093-86)**
Cold-drawn seamless pipes used in diesel injection systems, these pipes are designed to handle high pressure and ensure precise fuel delivery.
13. **Precision Inner Diameter Seamless Tubes (GB 8713-88)**
These tubes are used in hydraulic and pneumatic cylinders. Their precise inner diameter dimensions ensure smooth operation and minimal leakage.
14. **Cold-Drawing or Cold-Rolled Precision Seamless Pipe (GB 3639-83)**
Ideal for mechanical structures and hydraulic equipment, these pipes offer high dimensional accuracy and a smooth surface finish. They reduce machining time and improve material efficiency.
15. **Stainless Steel Seamless Pipe for Structural Use (GB/T 14975-2002)**
Made from hot-rolled or cold-drawn stainless steel, these pipes are used in chemical, medical, and food industries where corrosion resistance is crucial.
16. **Stainless Steel Seamless Pipe for Fluid Delivery (GB/T 14976-2002)**
Suitable for conveying fluids, these pipes are available in both hot-rolled and cold-drawn forms, ensuring flexibility and reliability in fluid transport systems.
17. **Shaped Seamless Pipe**
A general term for pipes with non-circular cross-sections, including equal-wall thickness (D), unequal wall thickness (BD), and variable-diameter (BJ) types. Shaped pipes offer better resistance to bending and torsion, making them ideal for structural and mechanical applications.
18. **Seamless Steel Tubes for Low Temperature Pipelines (GB/T 18984-2003)**
Used in low-temperature environments (-45°C to -195°C), these pipes are made from carbon steel, low-alloy steel, or combined steel. They are essential for cryogenic storage and transportation systems.
In addition to the above standards, seamless pipes are often tested for strength, flattening, and hydraulic pressure. Hot-rolled pipes are delivered in a hot-rolled or heat-treated state, while cold-rolled pipes are usually heat-treated. Companies like Jiangyin Lubao Tube Industry Co., Ltd. use specialized formulas to calculate the weight of seamless tubes based on outer diameter and wall thickness.
For example, the formula for calculating the weight per meter of a seamless tube is:
**(Outer Diameter – Wall Thickness) × Wall Thickness × 0.02466 = Weight per Meter (kg)**
This helps in accurate material planning and cost estimation. Whether for industrial, mechanical, or construction purposes, seamless steel pipes remain a fundamental component in modern engineering.