GB/T 42795-2023Steel plate for high strain offshore line pipe of oil&gas transmission (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

1 Scope

This document specifies the grade representation method, ordering content, size, shape, weight, and technical requirements of steel plates for high-strain offshore oil and gas pipelines. requirements, test methods, inspection rules, packaging, marking and quality certificates.

This document applies to high-strain steel plates for offshore oil and gas pipelines (hereinafter referred to as steel plates) with a thickness of 20mm~45mm.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 223.9 Determination of aluminum content in steel and alloys Chromium Azure S spectrophotometry

GB/T 223.11 Determination of chromium content in steel and alloys by visual titration or potentiometric titration method

GB/T 223.14 Methods for chemical analysis of steel and alloys - Determination of vanadium content by tantalum reagent extraction photometry

GB/T 223.17 Methods for chemical analysis of steel and alloys - Determination of titanium content by diantipyrine methane photometry

GB/T 223.18 Methods for chemical analysis of steel and alloys. Separation of sodium thiosulfate-Determination of copper content by iodometric method

GB/T 223.26 Determination of molybdenum content in steel and alloys Thiocyanate spectrophotometry

GB/T 223.37 Determination of nitrogen content in steel and alloys by distillation and separation of indophenol blue spectrophotometry

GB/T 223.40 Determination of niobium content in steel and alloys by chlorosulfenol S spectrophotometry

GB/T 223.54 Determination of nickel content in steel and alloys by flame atomic absorption spectrometry

GB/T 223.59 Determination of phosphorus content in steel and alloys bismuth phosphorus molybdenum blue spectrophotometry and antimony phosphorus molybdenum blue spectrophotometry

GB/T 223.60 Chemical analysis methods for steel and alloys Determination of silicon content by perchloric acid dehydration gravimetric method

GB/T 223.63 Determination of manganese content in steel and alloys - Sodium (potassium) periodate spectrophotometry

GB/T 223.69 Determination of carbon content in steel and alloys - Combustion gas volume method in tubular furnaces

GB/T 223.72 Gravimetric method for determination of sulfur content in steel and alloys

GB/T 223.75 Determination of boron content in steel and alloys by methanol distillation-curcumin photometric method

GB/T 228.1 Tensile testing of metallic materials Part 1: Room temperature test methods

GB/T 229 Charpy pendulum impact test method for metal materials

GB/T 232 Bending test method for metal materials

GB/T 247 General provisions for packaging, marking and quality certificates of steel plates and steel strips

GB/T 709-2019 Dimensions, shapes, weights and tolerances of hot-rolled steel plates and strips

GB/T 2970 Ultrasonic testing method for thick steel plates

GB/T 2975 Sampling location and sample preparation for mechanical property testing of steel and steel products

GB/T 4336 Determination of multi-element content in carbon steel and medium-low alloy steel Spark discharge atomic emission spectrometry (conventional method)

GB/T 4340.1 Vickers hardness test of metallic materials Part 1: Test methods

GB/T 6394 Method for determination of average grain size of metals

GB/T 8170 Numerical rounding rules and representation and determination of limit values

GB/T 8363 Drop weight tear test method for steel