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EN 10297 Seamless Cold Rolled Steel Tube Bright Surface 42CrMo4 1.7225 Grade


EN 10297 Seamless Cold Rolled Steel Tube Bright Surface 42CrMo4 1.7225 Grade

Brand Name : UST

Model Number : OD: 6-219mm; WT: 1-34mm

Certification : ISO 9001

Place of Origin : China

MOQ : MOQ: 3 ton

Price : USD 800- 3000/ton

Payment Terms : L/C, T/T, D/A, D/P

Supply Ability : 1000 ton/month

Delivery Time : Within 15-35 days

Packaging Details : Plastic plugs in both ends, Hexagonal bundles of max 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips.

Usage : Oil and Gas industry and Large Machinery Strutural

Production Technique : Hot Rolled /Cold Finished

Quality Standard : DIN 2391, EN10305

Surface treatment : Oiled or upon request

Product name : Alloy steel tube 42CrMo4

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EN 10297 42CrMo4 1.7225 Seamless Cold Finished Steel Tube Bright Surface for Mechnical Purpose

Chemical CompositionMechanical Properties(In Quenched & Tempered State)
C0.17-0.24Tensile strength(MPA)930
Si0.17-0.37Yield strength (MPA)785
Cr0.80-1.10Reduction in Area (ψ/%)50
Mo0.15-0.25Impact (J)63





EN 10297-1 Grade 42CrMo4 Alloy Steel Seamless Tubes are most commonly used for general purpose applications worldwide.EN 10297-1 Grade 42CrMo4 Tubes are ductile and strong Tubes with long wearing properties .These Tubes are manufactured as per EN Specification and commercially referred as alloy steel Tubes.

EN 10297-1 Grade 42CrMo4 Specifies the technical delivery conditions for seamless circular tubes made of non-alloy and alloy steels for mechanical and general engineering purposes. All pipes are fully certified and traceable with heat numbers hard stamped onto each random length. We can supply cut lengths; long pieces and even bore from forged, machined bar to satisfy your urgent demand.

Main Features

1. Inner and outer walls of tube have high accuracy.
2. Excellent brightness.
3. No oxidization after heat treatment
4. High cleanness inside tube.


High Precision Cold Rolled Seamless Steel Tube is used in automotive industry, and in the occasion where the high accuracy, brightness, cleanness of the tube are required.


Size Range

6-426mm OD; 1-40mm WT

Pipe EndPlain / Beveled / Vanished / Plastic Caps
CoatingBlack / Galvanised / 3LPE / Turned / Peeled / Grinded / Polished / Anti – Corrosion Oil
Length15 Mtr max Cut to Length available
Heat TreatmentSpheroidizing / Full Annealing / Process Annealing / Isothermal Annealing / Normalizing / Quenching / Martempering (Marquenching) / Quench And Tempering / Austempering
ApplicationOil & Gas / Hydro Carbon Process / Automotive / Boiler, Heat Exchanger / Plumbing, HVAC & Firefighting / Structural / General Engineering / Railways / Sewage & Waterwell
Quality InspectionThird Party inspection is acceptable (SGS, BV etc.)


I.D tolerance (mm)O.D tolerance (mm)Straightness (mm)



Chemical Requirements, Composition, %

4140/G414000.35~0.400.20~0.350.70~0.900.025 Max0.025 Max0.80~1.100.18~0.25
DIN 17220, EN 10083CSiMnPSCrMo
1.7225/42CrMo40.38~0.45≤0.400.60~0.900.035 Max0.035 Max0.90~1.200.15~0.30
GB/T 1229CSiMnPSCrMo
42CrMo0.38~0.450.17~0.370.50~0.800.030 Max0.030 Max0.90~1.200.15~0.25
SCM4400.38~0.430.15~0.350.60~0.850.030 Max0.030 Max0.90~1.200.15~0.30

Mechanical Properties

GradeConditionMPa Tensile PointYield PointElongation


Q+T (Quenched and tempered.)As your requirements

Mill Test Certificate

MTC is issued in accordance with EN 10204.

What we can offer?

-We offer a wide range of steel products in a wide variety of dimensions and executions, according to the common international specifications or customize.

-Machining and heat treatment are available.

-Also, we advise you in choosing the right materials.

Quality Assurance

Below inspection will be done in the production.
(1) ray detection---RT;
(2) ultrasonic testing---UT;
(3) Magnetic Particle Testing-MT;
(4) penetration testing-PT;
(5) eddy current flaw detection-ET


In standard export packing and seaworthy material with hexagon shape bundle, covered with tarpaulin, in containers or in bulk, or upon request

Payment & Delivery

1. Both T/T and L/C will be acceptable

2. Trade Terms: FOB, CIF, CFR

3. The delivery will be in 10-15 days if have stock; For customized items, the delivery will be negotiated by both parties

4. Shipping by sea freight from Shanghai Port (PRC) for Bulk orders, by airfreight or express for samples

Company Information

Shanghai Unite Steel Trading Co., Ltd

We are committed to integrate engineering steel resources in china and serve the global engineering steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise.

In the aspect of resources and information, we have established cooperative and stronger relationship with nearly hundred enterprises, either state-owned or private owned in china.

What’s more, we have built long, deep and close business relationship with dozens of steel company, Sharing and holding equities with several steel enterprises. Because of the close cooperation with steel companies and our pioneering spirit, which can ensure us stay at the top competition, and ensure our customers get what they really want!


Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and trading company. We specialized in special steel which include alloy structural steel and carbon steel and stainless steel, etc. All material are with high quality and competitive price.

Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party, such as TUV, CE, if you need. Secondly, we have a complete set of inspection system and every process is checked by QC. Quality is the lifeline of enterprise survival.

Q: Delivery time?
A: We have ready stock for most of material grades in our warehouse. If the material doesn't have stock, the delivery lead time is about 5-30 days after receiving your prepayment or firm order.

Q: What is the payment term?
A: T/T or L/C.

Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you come to China and arrange our driver to our airport to pick you up when you come.

Product Tags:

Cold Finished Seamless Steel Tube


Oiled Alloy steel tube


40mm cold rolled mild steel tube

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