Cold Drawn Medium Empty Tube 4340 40CrNiMoA 45crnimova Sncm439 36nicrmo4 1.6511 Precision Alloy Steel Pipe

• Type: Seamless
• Technique: Cold Drawn
• Material: Carbon Steel
• Surface Treatment: Black
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Model NO.: Cold drawn medium empty tube 4340 40CrNiMoA 45CrNi
• Thickness: 4mm-150mm
• Length: 12m
• MOQ: 1 Ton
• Tolerance: ±5%, ±1%
• Delivery Time: 8-14 Days
• Oiled or Non-Oiled: Non-Oiled
• Processing Service: Punching, Bending, Decoiling
• Invoicing: by Actual Weight
• Product Name: Seamless Precision Steel Tube/Pipe
• Packages: Sea Worthy Packaging
• Standard: ASTM GB JIS DIN En
• Transport Package: Customized or Regular Shipping According to Custom
• Specification: OD 4-2420mm
• Trademark: MEIDE
• Origin: Shandong, China
• HS Code: 7304519090
• Production Capacity: 200000 Ton/Tons Per Month

Product Description

Product Description

Cold-drawn precision seamless steel pipe is a kind of high precision steel pipe material. The main categories are: precision seamless steel pipe, precision hydraulic seamless steel pipe, cold-drawn precision seamless steel pipe, cold-rolled precision seamless steel pipe, high precision seamless steel pipe, precision bright seamless steel pipe.
4340 alloy steel pipe is a high-quality alloy structural steel with high strength, toughness, good hardenability, and stability against overheating, but high sensitivity to white spots and temper brittleness. Poor weldability, requiring high-temperature preheating before welding, stress relief after welding, and use after tempering. Introduce the production of important components with high strength and good plasticity, as well as the production of important components with special performance requirements after nitriding treatment, such as shafts, gears, fasteners, etc

Chemical Composition (%)

Material	C	Si	Mn	P	S	Cr	Ni	Mo
4340	0.38-0.43	0.15-0.35	0.60-0.80	0.035	0.040	0.70-0.90	1.65-2.00	0.20-0.30

Mechanical property

Material	Diameter of sample d mm	Impact toughness value αkv (J/cm2)	Tensile strength σb Mpa	Point of yield σs Mpa	Ratio of elongation δ5 %	Reduction of section ψ %	hardness HBW	Shock absorption energy KV2  J
ASTM 4340	d=25	≥98	≥980	≥835	≥12	≥55	≤269	≥78

Heat Treatment

4340 Alloy Steel Pipe Heat Treatment Specification:
Heat treatment specifications: 900 ºC normalizing, 850 ºC oil quenching, 620 ºC tempering, oil cooling.
40CrNiMo alloy steel pipe type:
Carbon structural steel Q195Q235 hot-rolled air-cooled F+P
Low alloy high-strength steel Q345 (16Mn) hot-rolled and air-cooled F+P
Carbon steel 2020Cr20CrMnTi carburizing+quenching+low-temperature tempering
Surface: M loop+A '(small amount)+granular Fe3C Heart: M loop+F
Quenched and tempered steel 4540Cr40CrNiMo quenched and tempered S-back
Spring steel 65Mn60Si2Mn quenched+medium temperature tempered T-cycle
Rolling bearing steel GCr15 ball annealing+quenching+low-temperature tempering M+A '(small amount)+granular Fe3C
Wear resistant steel ZGMn13 water toughening treatment table: M+carbide core: A
Carbon Tool steel T7~T13 ball annealing+quenching+low temperature tempering M back+A '(a small amount)+granular Fe3C
Low alloy Tool steel 9SiCr ball annealing+quenching+low temperature tempering M back+A '(a small amount)+granular Fe3C
High speed steel W18Cr4V forged, annealed, quenched+triple tempered M back+A '(small amount)+granular carbide
Cold working die steel Cr12Cr12MoV forged, annealed, quenched+low-temperature tempered M back+A '(small amount)+granular carbide
Hot forging die steel 5CrNiMo5CrMnMo quenched and tempered S-cycle
Die casting die steel 3Cr2W8V quenched+tempered M+A '(small amount)+granular carbide
Stainless steel 1Cr13, 2Cr13 quenched and tempered S-loop
3Cr13,4Cr13 quenching+low-temperature tempering M cycle
0Cr13 cannot be heat treated for M cycles
1Cr18Ni9Ti solid solution treatment A
Heat resistant steel 15CrMo, 12Cr1MoV normalized F+P
4Cr9Si2,1Cr11MoV quenched and tempered S-loop
1Cr18Ni9Ti solid solution A
Grey cast iron HT250 (minimum tensile strength 250MPa) liquid metal graphitization+inoculation treatment
Relieving stress, eliminating white spots, surface quenching matrix (F, P, F+P)+flake graphite
Malleable cast iron KTZ450-06 (minimum tensile strength 450MPa, minimum elongation 6%)
White mouth+graphitization annealing, graphitization annealing matrix (F, P)+flocculent graphite
Ductile iron QT500-7 (minimum tensile strength of 500MPa, minimum elongation of 7%)
Liquid metal graphitization+spheroidization treatment+inoculation treatment can undergo various heat treatments
Matrix (F, P, F+P)+Spherical graphite
Vermicular graphite cast iron is represented by "rut", followed by a number indicating the minimum tensile strength

Product specification

Specification: outer diameter of hot-rolled pipe is 32~630mm. The wall thickness is 2.5~75mm. The outer diameter of cold rolled (cold drawn) pipe is 5~200mm. The wall thickness is 2.5~12mm.
Appearance quality: the internal and external surfaces of steel pipes shall be free of cracks, folds, folds, delamination, hairlines and scabs. These defects shall be completely removed, and the wall thickness and outer diameter shall not exceed the negative deviation after removal.
Both ends of the steel pipe shall be cut at right angles and the burrs shall be removed. Gas cutting and hot saw cutting are allowed for steel pipes with wall thickness greater than 20mm. The head may not be cut after the agreement between the supplier and the supplier.

product application

Seamless pipes are widely used. Seamless pipes for general purposes are rolled by ordinary carbon structural steel, low alloy structural steel or alloy structural steel, with the largest output, and are mainly used as pipes or structural parts for conveying fluid.
Supply is divided into three types according to different purposes: a. Supply according to chemical composition and mechanical properties; B. Supply according to mechanical properties; C. Supply according to hydraulic test. The steel pipes supplied according to category a and b shall also be subjected to hydraulic test if they are used to bear liquid pressure.
There are many kinds of seamless pipes for special purposes, such as boiler seamless pipes, geological seamless pipes and petroleum seamless pipes.

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