The chemistry of grade 4140 seamless pipe manifests good overall alliances of properties such as toughness, strength, fatigue strength and wear resistance as well. A heat treatment is carried out on the components for the purpose of improving its mechanical properties. Furthermore, this alloy has self-scaling properties, which is an important characteristic for 4140 alloy steel pipe. The resistance to scaling would effectively lower the cost of treatment. Considered to be a mechanical tube, the aisi 4140 steel pipe is produced by either cold finishing or by means of hot finishing, which is usually cast in ingots or if required, strand cast. Once the pipe has been hot worked, it could be cold finished, and finally, they are coated with oil prior to being formed. Oiling the surface of ASTM A519 Grade 4140 Pipe efficiently retards the collection of dust.

Chemical Structure of AISI 4140 Seamless Pipe

AISI 4140 Tool Steel Pipe Mechanical Behaviour

Buy ASME SA 519 GR.4140 Boiler Tubes & SAE 4140 Chrome Moly Tube at factory price

Testing & quality inspection of AISI 4140 Pipe

• Mechanical test
• Pitting resistance test
• Chemical analysis
• Flaring test
• Hardness test
• Flattening test
• Ultrasonic test
• Macro/micro test
• Radiography test
• Hydrostatic test

FAQ

1.Will you deliver the goods on time?

Yes,we promise to provide best quality products and delivery in time no matter if the price change lot or not, Honesty is our company's tenet.

2.How can I get your quotation as soon as possible?

The email and fax will be checked in 24 hours, meanwhile, the skype will be online in 24 hours Please tell us the order information about quantity, Specification(steel type, material, size )and destination port, you will get the latest price.

3.How about the sample if i need?

The sample will be offered for free if you need, but the freight will be covered by our customer. If we have cooperation, the freight will be covered by our company.

4.How about the MOQ?

Generally, the trail order will be accepted.The MOQ can be confirmed according to the different products. For example, the MOQ of PPGI will be 10MT.

5.How about the delivery time?

Within 15-30days after receiving the deposit or L/C at sight. Of course, the detail will be confirmed by the quantity and the different products.

6.How to order?

Please send us your purchase order by email. Or you can ask us to send you a proforma invoice for your order. We need to know the following information for your order.

7.What is shipment terms?

1. Container ship 2. bulk ship 3. Train

8.Do you have English Mill Test Certificates?

Yes,that is what we give gurantee to our clients

9.Do you accept the third party inspection?

Yes,absolutely we accept.