China Cheap price Sa A105 Socket Welding Flange - Forged Cylinders – DHDZ

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China Cheap price Sa A105 Socket Welding Flange - Forged Cylinders – DHDZ Detail:

Open Die Forgings Manufacturer In China



Max. O.D. Max. Length Max. Weight
4000mm 10 000mm 30 Tons

DHDZ manufactures seamless forged, heavy wall hollow cylinders and sleeves in a variety of customized configurations as per customer requirements. Seamless forged hollows are ideal for high-stress applications and harsh environments due to their durability, strength and corrosion resistance. Hollows can be produced not only in a straight cylindrical shape, but with unlimited variations of O.D.s and I.D.s, including tapers.

Additionally DHDZ offers all downstream processing including heat treatment, machining and mechanical and non-destructive testing, upon request. Contact us today with your exact specifications, our team will work with you to capitalize on our capabilities to minimize material waste and reduce process inefficiencies.

Common used material: 1045 | 4130 | 4140 | 4340 | 5120 | 8620 | 42CrMo4 | 1.7225 | 34CrAlNi7 | S355J2 | 30NiCrMo12 |22NiCrMoV |EN 1.4201 |42CrMo4

Shanxi DongHuang Wind Power Flange Manufacturing Co., LTD., as an ISO registered certified forging manufacturer, guarantee that the forgings and/or bars are homogenous in quality and free of anomalies which are detrimental to the mechanical properties or machining properies of the material .

Case: Steel Grade AISI 4130 Alloy Steel (UNS G41300)

Physical Properties

Properties Metric Mperial
Density 7.85 g/cm3 0.284 lb/in³
Melting point 1432°C 2610°F

AISI 4130 Alloy Steel Relevant Specifications and Equivalents

AISI 4130











0.280 – 0.330

0.40 – 0.60

0.15 – 0.30

0.030 max

0.040 max










 JIS G4404

GB/T 1229

ISO 683/18

AISI 4130/ G41300


SMN 420



Some typical application areas for AISI 4130:
Oil and gas industries – as forged valve bodies and pumps
Commercial aircraft, aircraft engine mounts
Military aircraft
Machine tools
Hydraulic tools
Auto racing
Agricultural and defense industries etc.

AISI 4130 Forged Cylinder , Low alloy Steel forgings for oil and gas industries.

Size: φ774.8 0xφ317.0XH825.5mm

Fabrication and Heat Treatment

Machinability – AISI 4130 steel can be easily machined using conventional methods. However, machining becomes difficult when the hardness of the steel is increased.

Forming of AISI 4130 steel can be performed in the annealed condition.
● Welding of AISI 4130 steel can be performed by all commercial methods.
● Heat Treatment – AISI 4130 steel is heated at 871°C (1600°F) and then quenched in oil. This steel is usually heat-treated at temperatures ranging from 899 to 927°C (1650 to 1700°F).
● Forging of AISI 4130 steel can be performed at 954 to 1204°C (1750 to 2200°F).
● Hot working of AISI 4130 steel can be done at 816 to 1093°C (1500 to 2000°F).
● AISI 4130 steel can be cold worked using conventional methods.
● AISI 4130 steel can be annealed at 843°C (1550°F) followed by air cooling at 482°C (900°F).
● Tempering of AISI 4130 steel can be performed at 399 to 566°C (750 to 1050°F), depending on the desired strength level.
● Hardening of AISI 4130 steel can be done with cold working or heat treatment.
Some of the major applications of AISI 4130 alloy steel are in aircraft engine mounts and welded tubing.

Forging (Hot Work ) Practice , Heat Treatment Procedure




778-843℃ furnace cool




871-898℃ air cool


815-843℃ water quench

Stress Relieve




Rm - Tensile strength (MPa) (Q +T)


Rp0.2 0.2% proof strength (MPa) (Q +T)


KV - Impact energy (J)

(Q +T)


A - Min. elongation at fracture (%)(Q +T)


Z - Reduction in cross section on fracture (%)(N+Q +T)


Brinell hardness   (HBW):   (Q +T)



OR CALL: 86-21-52859349




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  • The factory technical staff not only have high level of technology, their English level is also very good, this is a great help to technology communication.
    5 Stars By Daniel Coppin from Algeria - 2017.09.22 11:32
    The customer service reprersentative explained very detailed, service attitude is very good, reply is very timely and comprehensive, a happy communication! We hope to have a opportunity to cooperate.
    5 Stars By Mavis from Czech Republic - 2017.10.23 10:29
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