En 10216-4 26crmo4-2  1.7219 Seamless Alloy Steel Tubes Pipe for Specified Low Temperature

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Product Description

⚙️ Basic Information
Model NO.
26CrMo4-2 / 1.7219
Technique
Hot-Rolled + Cold-Drawn
Material
Alloy Steel
Surface Treatment
As Required
Usage
For Oil Equipment
Section Shape
Round
Cutting Service
Available
MTC
3.1 or 3.2 Certificate
Delivery Condition
A, N, Q+T
Transport Package
Seaworthy Standard Package
Specification
30-850mm
Origin
China
HS Code
7304192000
Production Capacity
50,000 Tons/Year
📘 Product Overview

We are a leading provider of high-quality EN 10216 Alloy Steel Seamless Pipes, manufactured in strict conformance with international quality standards. These pipes are essential for varied engineering applications, high-temperature pipelines, boiler tubes, and specialized industrial sectors including petrochemical, chemical, oil, and gas.

The EN 10216 specification details technical delivery conditions for seamless tubes of circular cross-section, focusing on specified elevated temperature properties. This standard applies to non-alloy and alloy steel tubes, ensuring reliability in demanding environments.

📜 Technical Standards
Standard: BS EN 10216
Seamless steel tubes for pressure purposes - Technical delivery conditions.
PART 4: Non-alloy and alloy steel tubes with specified low temperature properties.
🧪 Chemical Composition
Steel Grade Steel Number C (%) Si (%) Mn (%) P max S max Cr (%) Ni (%) Mo (%)
P215NL1.0451≤ 0.15≤ 0.350.40 to 1.200.0250.020≤ 0.30≤ 0.30≤ 0.08
P255QL1.0452≤ 0.17≤ 0.350.40 to 1.200.0250.020≤ 0.30≤ 0.30≤ 0.08
P265NL1.0453≤ 0.20≤ 0.400.60 to 1.400.0250.020≤ 0.30≤ 0.30≤ 0.08
26CrMo4-21.72190.22 to 0.29≤ 0.350.50 to 0.800.0250.0200.90 to 1.20--0.15 to 0.30
11MnNi5-31.6212≤ 0.14≤ 0.500.70 to 1.500.0250.015--0.30 to 0.80--
12Ni141.5637≤ 0.150.15 to 0.350.30 to 0.800.0250.010--3.25 to 3.75--
X10Ni91.5682≤ 0.130.15 to 0.350.30 to 0.800.0200.010--8.50 to 9.50≤ 0.10
📊 Mechanical Properties
Mechanical Property Chart
🔍 Inspection and Testing

Mandatory Tests:

  • Cast analysis & Room temperature tensile test
  • Flattening, Ring tensile, and Impact tests
  • Leak tightness test (Hydraulic or Electromagnetic)
  • Dimensional inspection & Visual examination
  • Longitudinal imperfection detection (NDT)

Optional Tests:

  • Product analysis & Elevated temperature tensile test
  • Longitudinal impact test
  • Wall thickness measurement (mid-tube)
  • Transverse and Laminar imperfection NDT
🏗️ Manufacture and Appearance

Manufacturing Process: Tubes are produced via a seamless process. They may be hot or cold finished. "Cold finished" implies the condition before heat treatment. All NDT personnel are certified to EN 10256 or equivalent levels.

Appearance: Surfaces are free from external and internal defects. Dressing by grinding or machining is permitted as long as the remaining wall thickness meets the minimum specifications. Any imperfection deeper than 5% of the wall thickness (or 3mm) must be dressed.

Straightness: Deviation shall not exceed 0.0015 L (total length). Local deviation is capped at 3mm per metre.

📸 Product Gallery
Alloy Steel Tube 1
Alloy Steel Tube 2
Alloy Steel Tube 3
Alloy Steel Tube 4
Alloy Steel Tube 5
Alloy Steel Tube 6
Alloy Steel Tube 7
❓ Frequently Asked Questions
What is the primary application of EN 10216-4 tubes?
These seamless alloy steel tubes are specifically designed for pressure purposes where low-temperature properties are required, such as in oil equipment, chemical processing, and specialized pipelines.
Can these tubes be customized in size?
Yes, we offer these pipes in various sizes ranging from 30mm to 850mm in diameter, with different wall thicknesses as per customer requirements.
What heat treatment conditions are available?
Tubes can be supplied in various delivery conditions including Annealed (A), Normalized (N), and Quenched & Tempered (Q+T).
How is the leak tightness verified?
Every tube must pass either a hydraulic test or an electromagnetic test to ensure it is fully leak-tight before delivery.
Is the straightness of the tubes guaranteed?
Yes, the deviation from straightness is strictly controlled not to exceed 0.0015 of the total length, with a maximum limit of 3mm per single metre.
What documentation is provided with the order?
We provide Mill Test Certificates (MTC) in accordance with EN 10204 3.1 or 3.2 standards to guarantee material quality and traceability.

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