YB/T 4656-2018 in English
VALIDHot-rolled H section steel for pumping unit
- Issued on:2018-04-30
- Implemented on:2018-09-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
| Standard No: | YB/T 4656-2018 |
| Document status: | VALID |
| Title in English: | Hot-rolled H section steel for pumping unit |
| Title in Chinese: | 抽油机用热轧H型钢 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2018-04-30 |
| Implemented on: | 2018-09-01 |
| Professional Classification: | YB-Metallurgy |
| Related Keywords: | comparison dimensions general-purpose h-shaped steel h-shaped steel
h-shaped steel general-purpose steel gb/t hot-rolled h section steel structural steel |
| Related Topics: | micro mill
ams2471h steel yb h Micro capping machine Specifications of hot-pressed h-beam Hot Rolled H Beam Refractory hot-rolled H-beam hot rolled steel H-shaped steel design API pumping unit latest Hot rolled H-shaped steel 1998 steel Hot rolled steel section latest Pumping Unit International ams2481 h h-2000u |
本标准规定了抽油机用热轧H型钢的分类与代号、订货内容、尺寸、外形、重量及允许偏差、技术要求、试验方法、检验规则、包装、标志及质量证明书等。
本标准适用于抽油机横梁、游梁、座体纵梁以及座体前梁用热轧H型钢。
Introduction
Analysis of the core content of the standard
This standard specifies the technical requirements for the entire process from material selection to finished product acceptance, targeting the H-shaped steel specially designed for the key load-bearing components of the oil pump in oil extraction equipment. Compared with the general-purpose steel GB/T 11263, this standard has the following characteristics:
| Comparison dimensions | General-purpose H-shaped steel | H-shaped steel for oil pumping units |
|---|---|---|
| Classification system | Classification by cross-sectional shape | Classification by use position (CY/CH/CZ/CQ) |
| Dimension tolerance | ±2mm (height) | ±1.5mm (critical dimension) |
| Mechanical properties | Basic requirements | Must meet the dynamic load characteristics of oil pumping units |
Detailed explanation of key technical requirements
4.1 Material selection specifications
The standard allows the use of three basic materials:
- GB/T 700 carbon structural steel: Suitable for conventional working conditions
- GB/T 1591 low alloy high strength steel: Recommended for heavy load conditions
- GB/T 4171 weathering steel: Suitable for corrosive environments
4.2 Key dimensional control
Take CY340×252 as an example:
Strict control of the web thickness t₁=11±0.5mm ensures the anti-buckling ability of the walking beam under alternating loads. Actual cases show that a thickness deviation exceeding 0.7 mm will result in a 15% reduction in fatigue life.
Implementation and application suggestions
Selection strategy
- Match the H-steel category (CY/CH/CZ/CQ) according to the oil pump model
- Q355B and above grades are preferred for heavy load conditions
- Weathering steel is recommended for offshore platform applications
Acceptance points
- Focus on checking the flange thickness deviation and section modulus
- Sampling the impact energy test samples in each batch
- Pay attention to the rigid requirement that the burr on the cut surface is ≤8mm
Technology evolution analysis
Compared with the old version of the specification, YB/T 4656-2018 Main improvements:
- Added special CQ steel for seat front beam
- Refined the control requirements for dimensional tolerance band
- Clarified the applicable conditions of carbon equivalent calculation formula
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