Small Diameter Steel Pipe 5120 5120h 16crmnh Smnc420h 16mncr5 1.7131 Cold Drawn Tube Hot Rolled Pipe Hollow Precision 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.: 5120 5120H 16CrMnH SMnC420H 16MnCr5 1.7131
• 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

Precision steel pipe is a high-precision steel pipe material processed by cold drawing or hot rolling. Due to the advantages of no oxide layer on the inner and outer walls of precision steel pipes, no leakage under high pressure, high precision, high smoothness, no deformation during cold bending, flaring, flattening, and no cracks, they are mainly used to produce products for pneumatic or hydraulic components, such as cylinders or oil cylinders, which can be seamless pipes or welded joints.

Chemical Composition (%)

Material	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
ASTM 5115 GB 15Cr	0.12-0.18	0.17-0.37	0.4-0.7	0.035	0.035	0.7-1	0.3	0.3	0.15
ASTM 5120 GB 20Cr	0.18-0.24	0.5-0.8	0.7-0.9	0.035	0.035	0.7-1	0.3	0.3	0.15
ASTM 5130 GB 30Cr	0.27-0.34	0.17-0.37	0.5-0.8	0.035	0.035	0.8-1.1	0.3	0.3	0.15
ASTM 5135 GB 35Cr	0.32-0.39	0.17-0.37	0.5-0.8	0.035	0.035	0.8-1.1	0.3	0.3	0.15
ASTM 5140 GB 40Cr	0.37-0.44	0.17-0.37	0.5-0.8	0.035	0.035	0.8-1.1	0.3	0.3	0.15
ASTM 5145 GB 45Cr	0.42-0.49	0.17-0.37	0.5-0.8	0.035	0.035	0.8-1.1	0.3	0.3	0.15

Mechanical property

Material	Diameter of sample d mm	Heat treatment or condition.	Tensile strength σb Mpa	Point of yield σs Mpa	Ratio of elongation δ %	Reduction of section ψ %	hardness HBW	Shock absorption energy KV2 J
ASTM 5115 GB 15Cr	d=25	Quenching + tempering	≥735	≥490	≥11	≥45	≤179	≥55
ASTM 5120 GB 20Cr	d=25	Quenching + tempering	≥835	≥540	≥10	≥40	≤179	≥47
ASTM 5130 GB 30Cr	d=25	Quenching + tempering	≥885	≥685	≥11	≥45	≤187	≥47
ASTM 5135 GB 35Cr	d=25	Quenching + tempering	≥930	≥735	≥11	≥45	≤207	≥47
ASTM 5140 GB 40Cr	d=25	Quenching + tempering	≥980	≥785	≥9	≥45	≤207	≥47
ASTM 5145 GB 45Cr	d=25	Quenching + tempering	≥1030	≥835	≥9	≥40	≤217	≥39

Import and export steel pipes

Generally, the import volume of seamless pipe is large. The main importing countries are Germany and Japan. European countries such as Romania, Russia, Switzerland, France, Spain, the Czech Republic, Yugoslavia, Hungary and other countries have imported. There are also a small amount of imports from Argentina, Mexico and other countries in South America.
According to the different requirements of the consumer in China, there are more than 100 types of imported seamless pipes, including 15922mm, 1595mm and 15918mm. 114.38mm,114.310mm,114.313mm. The length is generally 5-8m or 4-7m. Mainly hot-rolled carbon structure and ST65. The minimum diameter of the inlet specification is 305 mm, and the maximum diameter is 47813 mm.
A small number of seamless pipes with small diameter and thin wall have been imported from France and Spain, such as 183mm, 223mm, 26.93mm, etc. Implement the general rules of Mannesmann Steel Pipe Plant in Germany.
Seamless pipes imported from Hungary and Japan often refer to DIN2448 and DIN1629.

The production process of precision steel pipes, like ordinary seamless pipes, involves an additional process of final pickling and cold rolling.
Precision steel pipe process flow
Tube blank - Inspection - Peeling - Inspection - Heating - Piercing - Acid washing and passivation - Grinding - Lubrication and air drying - Cold rolling - Degreasing - Cutting - Inspection - Identification - Finished product packaging

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