High Strength High Hardenability Alloy Bearing Steel Pipe 5120 5140 20cr4 SCR420 20cr Alloy Hollow Section Round Steel Tube

• Customization: Available
• Type: Seamless Steel Tube / Pipe
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Model NO.: 5120 5140 20Cr4 Scr420 20Cr
• Technique: Hot Rolled
• Shape: Round
• Surface Treatment: Black
• Special Use: Pipeline Transport, Boiler Pipe, Hydraulic/Automob
• Application: Fluid Pipe, Hydraulic Pipe, Structural Pipe
• Invoicing: by Actual Weight
• Thickness: 4mm-150mm
• Length: 12m
• Tolerance: ±5%, ±1%
• Oiled or Non-Oiled: Non-Oiled
• Delivery Time: 7-20 Days
• Transport Package: Customized or Regular Shipping According to Custom
• Specification: OD 4-2420MM
• Trademark: MEIDE
• Origin: Shandong, China
• HS Code: 7304319000
• Production Capacity: 200000 Ton/Tons Per Month

Product Description

Product Description

ASTM 5120 GB 20Cr	It is used to manufacture various carburized or carbonitriding parts with small section (less than 30mm), simple shape, high speed, small load, surface wear resistance and high core strength, such as pinion, pinion, valve, piston pin, bushing ratchet, tray, cam, worm, tooth clutch, etc. For parts with small heat treatment deformation and high wear resistance requirements, general quenching or high-frequency quenching shall be carried out after carburizing, such as small module (less than 3mm) gear Spline shaft, shaft, etc. can also be used as quenched and tempered steel for manufacturing parts with low speed and medium load (impact).
ASTM 4140 GB 42CrMo	It is generally used for manufacturing important parts with higher strength requirements and larger section size than 4135, such as shaft, gear, connecting rod, gearbox gear, supercharger gear, engine cylinder, spring, spring clip, 1200, 2000mm oil drill pipe joint, fishing tool and replacing quenched and tempered steel with higher nickel content.
ASTM 4130 GB 30CrMo	It is used to manufacture conduits with working temperature below 400 ° C, fasteners with working temperature below 450qC in boilers and steam turbines, nuts and flanges with working temperature below 500 ° C and high pressure, main shafts, shafts, gears, bolts, studs and control wheels with heavy load in general machinery, high-pressure conduits and weldments with working temperature below 250 ° C in chemical equipment and nitrogen and hydrogen media.
ASTM 1024 DIN ST52 GB 16Mn Q345	1024 seamless steel pipe is a low alloy high strength structural steel Good comprehensive performance, low temperature performance, cold stamping performance, welding performance and machinability. Used in mining, transportation, chemical and other machinery.
20CrMnTi	Carburized carbon steel can also be used as quenched and tempered steel. After quenching and low temperature tempering, it has good comprehensive mechanical properties and low temperature impact toughness. After carburizing, it has good wear resistance and bending strength. The heat treatment process is simple, and the hot and cold working properties are good, but there is a tendency to temper embrittlement during high temperature tempering. Used for manufacturing various important parts in automobiles and tractors with a cross-sectional size of less than 30 mm, such as gear shafts, gear rings, gears, cross shafts, main shafts supported by sliding bearings, worms, and tooth clutches, that are medium or heavy duty, impact resistant, and high-speed.

Chemical Composition (%)

Material	component	C	Si	Mn	P	S	Cr	Ni	Cu
ASTM 1320 GB 20Mn2	minimum value	0.17	0.17	1.4	-	-	-	-	-
	maximum value	0.24	0.37	1.8	0.035	0.035	0.3	0.3	0.3
ASTM 1330 GB 30Mn2	minimum value	0.27	0.17	1.4	-	-	-	-	-
	maximum value	0.34	0.37	1.8	0.035	0.035	0.3	0.3	0.3
ASTM 1335 GB 35Mn2	minimum value	0.32	0.17	1.4	-	-	-	-	-
	maximum value	0.39	0.37	1.8	0.035	0.035	0.3	0.3	0.3
ASTM 1340 GB 40Mn2	minimum value	0.37	0.17	1.4	-	-	-	-	-
	maximum value	0.44	0.37	1.8	0.035	0.035	0.3	0.3	0.3
ASTM 1345 GB 45Mn2	minimum value	0.42	0.17	1.4	-	-	-	-	-
	maximum value	0.49	0.37	1.8	0.035	0.035	0.3	0.3	0.3
GB 50Mn2 DIN 50Mn7	minimum value	0.47	0.17	1.4	-	-	-	-	-
	maximum value	0.55	0.37	1.8	0.035	0.035	0.3	0.3	0.3

Mechanical property

Material	Diameter (thickness) d  mm	tensile strength σ b Mpa	Yield point σ s Mpa	Elongation or elongation after fracture δ    %	Hardness HBW	Impact absorbed energy KV2 J
ASTM 1320 GB 20Mn2	d=15	≥785	≥590	≥10	≤187	≥47
ASTM 1330 GB 30Mn2	d=25	≥785	≥635	≥12	≤207	≥63
ASTM 1335 GB 35Mn2	d=25	≥835	≥685	≥12	≤207	≥55
ASTM 1340 GB 40Mn2	d=25	≥885	≥735	≥12	≤217	≥55
ASTM 1345 GB 45Mn2	d=25	≥885	≥735	≥10	≤217	≥47
GB 50Mn2 DIN 50Mn2	d=25	≥930	≥785	≥9	≤229	≥39

Company Profile

 

1. Technology of Hot Rolled, Cold Rolled or Cold drawn.
2. Hollow cross-section with lighter weight and higher pressure.
3. High hardness, strength, wear resistance and anti-corrosion.
4. The SMLS can becut, threaded or grooved. And the coating method includes black / red lacquer, varnish painting, hot dip galvanization, etc.

Product specification

Tolerances
Pipe types	Pipe sizes(mm)	Tolerances
Hot rolled	OD<50	±0.50mm
	OD≥50	±1%
	WT<4	±12.5%
	WT 4~20	+15%, -12.5%
	WT>20	±12.5%
Cold drawn	OD 6~10	±0.20mm
	OD 10~30	±0.40mm
	OD 30~50	±0.45
	OD>50	±1%
	WT≤1	±0.15mm
	WT 1~3	+15%, -10%
	WT >3	+12.5%, -10%

FAQ

Q1:who are we?
A:We are based in Shandong, China, start from 2022,sell to North America(60.00%),Western Europe(14.00%),South America(6.00%).
There are total about 11-50 people in our office.

Q2. how can we guarantee quality?
A:Always a pre-production sample before mass production;
Always final Inspection before shipment;

Q3.what can you buy from us?Which ports are accepted for delivery?
A:Copper,Aluminum,Mould steel, Seamless carbon steel,Precision steel pipe,The steel plate,Alloy steel,Titanium,Custom machine parts.It can be delivered from Qingdao, Tianjin, Shanghai, Guangzhou and other ports.

Q4.why should you buy from us not from other suppliers?
A:Shandong Meide Import and Export Co., Ltd. has 25 years of production experience. With advanced precision production equipment
and modern large warehouses, has a stockpile of 200,000 tons of goods, has a number of long-term stable cooperative customers.

Q5.what services can we provide?
A:Accepted Delivery Terms: FOB,CFR,CIF,EXW;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T,L/C,D/P D/A,PayPal;
Language Spoken:English,Chinese

Q6.Can we get the some samples?Any charges?
A:Yes,you can get available samples in our stock.Free for real samples,but customers need to pay the freight cost.

Q7.How can we get your price ?
A:We need below information to quote for you:
1). Product Name
2). Standard
3). Material Grade (Chemical Composition)
4). Dimension
5). Quantity
6). The Drawing for Special Parts