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42CrMo (equivalent to AISI 4140, 42CrMo4 1.7225) chromium‑molybdenum alloy steel forged tubesheet, manufactured by open‑die heavy forging process with compact internal grain flow, eliminating casting porosity and segregation defects
Excellent tensile strength, yield strength and impact toughness after quenched‑and‑tempered heat treatment; high hardenability for thick‑section heavy‑duty pressure vessel applicationsAlibaba.co...
Good high‑temperature strength and thermal stability, suitable for medium‑high temperature shell‑and‑tube heat exchangers, reactors and pressure equipment under cyclic pressure load
Fine machinable property for dense tube hole array drilling, precise hole‑pitch control to meet TEMA & pressure‑vessel codes for tube‑to‑tubesheet welding / expansion joint quality
Strict full‑range non‑destructive inspection including UT, MT, dimension verification for pressure‑bearing safety; fully custom‑made strictly per customer CAD drawings and process specifications
Compliant with NB/T47008 pressure‑equipment forging standard, acceptable for third‑party witness inspection (SGS, TUV, BV)Chinese St...
Long‑term reliable service for petrochemical, power generation, oil‑gas and heavy‑industrial shell‑and‑tube heat exchangers and pressure vessels
Product Overview
This custom 42CrMo forged tubesheet is heavy open‑die forged alloy steel component for pressure‑vessel shell‑and‑tube heat exchangers. Raw steel ingot goes through multi‑step upsetting & stretching forging to achieve dense metallographic structure, followed by quenching‑and‑tempering heat‑treatment to obtain balanced strength and toughness.
Compared with rolled plates, forged tubesheet delivers homogeneous through‑thickness mechanical performance and eliminates center segregation. After rough machining, NDT inspection and final precision CNC deep‑hole drilling, it supports high‑precision tube holes for expansion or welding assembly of heat‑exchange tubes. Widely adopted as core pressure‑bearing part for custom shell‑tube heat exchangers, condensers, reboilers and reactor internals under medium‑high pressure and medium‑high temperature working conditions.
Material Grade Characteristics – 42CrMo (42CrMo4 / 1.7225, AISI 4140)
Cr‑Mo alloy quenched‑and‑tempering steel, obtains comprehensive mechanical performance via oil quenching plus high‑temperature tempering process
High hardenability; thick cross‑section forgings still maintain stable strength and impact resistance
Good resistance to fatigue under cyclic pressure and temperature fluctuation for pressure‑vessel working cycles
Reliable high‑temperature mechanical property under continuous working temperature up to approx 500 °C
Acceptable weldability with mandatory pre‑heating and post‑weld stress relief for field welding repair
Specially designed for heavy‑section pressure‑bearing components requiring high strength, toughness and dimensional stability
Chemical Composition (Weight %)
表格
Grade
EN Standard No.
C
Si ≤
Mn
P ≤
S ≤
Cr
Mo
42CrMo
1.7225
0.38‑0.45
0.40
0.60‑0.90
0.025
0.025
0.90‑1.20
0.15‑0.30
Mechanical Properties (Quenched & Tempered Condition, Forging per NB/T47008)
Dense Forged Metallurgical Structure Multi‑direction open‑die forging eliminates internal shrinkage, porosity and segregation; uniform grain flow across full thickness, far superior to flame‑cut rolled plate for heavy thickness pressure‑vessel tubesheet.
Balanced Strength & Toughness for Pressure Cycle Quenched‑and‑tempered treatment delivers high tensile / yield strength together with good impact toughness, resisting deformation and crack initiation under cyclic pressure‑temperature load.
High Precision for Tube‑hole Machining Stabilized stress‑relieved condition minimizes machining distortion; supports dense array deep‑hole drilling with strict hole‑pitch, aperture and surface roughness requirements for tube expansion & welding quality.
Wide Custom‑Size Capacity Wide range for diameter and thickness, one‑piece forging for large‑size tubesheet; adaptable for fixed‑tube‑sheet, floating‑head and U‑tube heat‑exchanger designs.
Full Pressure‑vessel‑grade Quality Control Full set NDT, mechanical test and spectral analysis for each forging; meets international pressure‑equipment standards for global petro‑chemical and energy projects.
Typical Applications
Petrochemical shell‑and‑tube heat exchangers, condensers and reboilers
Power plant boiler auxiliary heat‑exchange equipment & high‑pressure heat exchangers
Oil & gas processing pressure vessels, high‑pressure separator internals
Chemical industry medium‑high pressure reactors and process heat‑transfer equipment
Refinery fractionation unit heat‑exchanger core pressure‑bearing tubesheet
We provide integrated heavy forging, heat‑treatment and full precision machining services, produce finished tubesheet strictly according to customer CAD/PDF drawings:
Quenching & tempering, stress relief heat‑treatment tailored for forging thickness
Rough turning/milling, removing forging scale and surface defects
CNC vertical lathe, gantry boring‑milling, CNC deep‑hole drilling for tube‑hole array, bolt holes, seal grooves and locating steps
Anti‑rust passivation, protective coating for storage & sea transportation
We supply custom forged tubesheets for pressure‑vessel and heat‑exchanger manufacturers worldwide for petrochemical, power, oil‑gas and heavy‑chemical sectors.
Quality Assurance
100% UT Ultrasonic Testing for internal forging flaws complying with NB/T47008 requirement
MT Magnetic Particle Inspection for surface crack detection
Tensile test, impact test & hardness measurement for mechanical property verification
Spectrometer full spectrum chemical composition analysis per forging lot
High‑precision CMM dimensional inspection for diameter, thickness, hole pitch and tolerance
Mill Test Certificate EN 10204 3.1 can be provided with shipment documents before delivery. Third‑party inspection witness is available upon request.
Packing & Delivery
Packing
Inner packaging: waterproof anti‑rust plastic film, protective cover for machined sealing faces and tube‑hole openings against scratch and rust
Outer packaging: reinforced fumigated wooden case or heavy‑duty steel frame crate for long‑distance sea transportation
Custom special packaging available on customer request for oversized heavy pieces
Lead Time Normally 25‑45 working days after receipt of advance payment. Exact delivery time depends on forging dimension, weight, heat‑treatment requirement, machining complexity and third‑party inspection schedule.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler
Year Established:
1998
Total Annual:
>1-2 billion
Employee Number:
>200+
Ecer Certification：
Verified Supplier
HengAn Weiye Steel Group (HA Group) is a leading Chinese supplier of special steel, alloy materials, and precision machining services, with nearly 30 years of industry experience. The company integrates material sourcing, manufacturing, processing, and international trade, providing one-stop solutio... HengAn Weiye Steel Group (HA Group) is a leading Chinese supplier of special steel, alloy materials, and precision machining services, with nearly 30 years of industry experience. The company integrates material sourcing, manufacturing, processing, and international trade, providing one-stop solutio...
