Welded and seamless 201 202 304 304L 316 316L stainless steel pipe

Welded and seamless 201 202 304 304L 316 316L stainless steel pipe

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t.

Supply Capability:: 2500 m.t./month

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Material	304:0cr18ni9, 0cr17ni8 201:1cr17mn6ni5n,1cr13mn9ni1n 316:0cr17ni12 or as customer’s request
Size(round pipe)	9.5, 12.7, 15.9, 17, 18, 19.1, 20, 21, 22.2, 23, 25.4, 28, 318, 35, 60, 63.5, 73, 76.2, 88.9, 101.6, 114.3, 127, 133, 59, 168, 219 mm or customized
Size (square pipe)	10×10,12×12,18×18,23×23,38×38,50×50,70×70,100×100,20×10,23×10,24×12,25×13,36×23, 40×20,50×20,60×15,75×45,80×60,95×45,100×60,150×100 mm or customized
Size (oval pipe)	30×15,80×40 mm os customized
Thickness	0.24-3 mm
Length	6m or according to customer’s request
Outer diameter	6.35-219mm
Tolerance	Outer diameter :±0.2mm
Thickness :±0.02mm
Length :±0.5mm
Process method	Code drawn, annealed with nitrogen protection, ultrasonic,automatic shape, polished
Finishing	A: sanded B: 400#-600# mirror C: hairline brushed D: TIN titanlum E : HL brushed & mirror (two kinds of finishing for one pipe)

Chemical Composition
Material	C	Si	Mn	P	S	Cr	Ni
201	≤0.12	≤0.75	9.5-12.5	≤0.045	≤0.03	13-16	0.8-1.5
304	≤0.08	≤0.75	≤2.0	≤0.045	≤0.03	18-19	8-10
316	≤0.08	≤1.00	≤2.0	≤0.035	≤0.03	10-14	16.0-18.5
430	≤0.12	≤0.75	≤2.0	≤0.04	≤0.03	16-18	≤0.6

Company Information

CNBM International Corporation is the most important trading platform of CNBM group.

Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.

WORK SHOP

Client

Export Markets Our target market is the international market. Every year we export most of products to countries like India, Pakistan, South Korea, Brazil, Australia, South Africa, Spain, Sri Lanka, Taiwan, Hong Kong, etc.

F A Q

FAQ

1, Your advantages?

professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale

2, Test & Certificate?

SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem

3, Factory or Trading Company?

CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department of these factories. Also CNBM is the holding company of many factories.

4, Payment Terms?

30% TT as deposit and 70% before delivery.

Irrevocable L/C at sight.

Q: Can stainless steel pipes be used for heat recovery systems?: Yes, stainless steel pipes can be used for heat recovery systems. Stainless steel is a popular choice for heat recovery systems due to its excellent heat resistance and corrosion resistance properties. It can withstand high temperatures without warping or deteriorating, making it suitable for transferring heat from one medium to another. Additionally, stainless steel pipes have a long lifespan and require minimal maintenance, making them a durable and cost-effective option for heat recovery systems.

Q: Can stainless steel pipes be passivated?: Stainless steel pipes have the ability to undergo passivation, a chemical procedure employed for eliminating free iron and other pollutants from the surface. This procedure holds great significance as it enhances the corrosion resistance of the stainless steel pipes and enhances their overall performance. The common approach to passivation involves either immersing the stainless steel pipes in an acidic solution or applying a chemical solution directly to the surface. The solution effectively eliminates any impurities or contaminants, leaving behind a pristine and corrosion-resistant layer. Passivation finds widespread usage in industries like food and beverage, pharmaceuticals, and oil and gas, where stainless steel pipes are extensively utilized.

Q: How do you prevent leaks in stainless steel pipes?: To prevent leaks in stainless steel pipes, there are several measures that can be taken: 1. Proper installation: It is crucial to ensure that stainless steel pipes are correctly installed. This includes using appropriate fittings and connectors, ensuring that pipes are securely fastened, and following the manufacturer's guidelines for installation. 2. Regular inspection and maintenance: Regularly inspecting stainless steel pipes can help identify any signs of wear, corrosion, or damage that could potentially lead to leaks. This can be done through visual inspection or by using non-destructive testing methods such as ultrasonic testing. 3. Corrosion prevention: Stainless steel pipes are known for their resistance to corrosion, but certain conditions can still lead to corrosion and potential leaks. Implementing corrosion prevention measures such as using corrosion-resistant coatings, cathodic protection systems, or inhibitors can significantly reduce the risk of leaks. 4. Proper cleaning and maintenance: Regular cleaning and maintenance of stainless steel pipes can help remove accumulated debris, dirt, or chemicals that may cause corrosion or damage. This can be done using suitable cleaning agents and techniques recommended by the manufacturer. 5. Pressure testing: Conducting pressure tests on stainless steel pipes is an effective way to identify any weak points or potential leaks. This involves applying pressure to the pipes and monitoring for any pressure drop, which could indicate a leak. Pressure testing should be performed during installation and periodically thereafter. 6. Temperature control: Extreme temperatures can cause thermal expansion or contraction of stainless steel pipes, potentially leading to leaks. Proper insulation, installation of expansion joints, or using flexible connectors can help accommodate these temperature changes and prevent leaks. 7. Regularly monitor and repair: It is important to establish a system for regularly monitoring stainless steel pipes for any signs of leaks or damage. This can include periodic inspections, leak detection systems, or remote monitoring technologies. Promptly repairing any identified issues can prevent further damage and potential leaks. By following these preventive measures, the risk of leaks in stainless steel pipes can be significantly reduced, ensuring their longevity and maintaining the integrity of the system they are a part of.

Q: Are stainless steel pipes suitable for food storage facilities?: Yes, stainless steel pipes are highly suitable for food storage facilities. Stainless steel is a popular choice in the food industry due to its numerous beneficial properties. Firstly, stainless steel is highly resistant to corrosion, which is essential in food storage facilities where contact with moisture and various food products is common. This resistance ensures that the pipes will not rust or degrade over time, preventing any potential contamination of the stored food. Furthermore, stainless steel pipes are easy to clean and maintain, making them ideal for food storage facilities where strict hygiene standards must be met. The smooth and non-porous surface of stainless steel pipes prevents the accumulation of bacteria, ensuring the stored food remains safe and uncontaminated. Stainless steel is also a non-reactive material, meaning it does not leach any harmful substances into the food. This is particularly important for food storage facilities as it ensures the integrity and quality of the stored food products are maintained. Additionally, stainless steel pipes have excellent strength and durability, allowing them to withstand the high pressures and temperature variations commonly encountered in food storage facilities. This ensures the pipes will not fail or break, providing a reliable and long-lasting solution. In conclusion, stainless steel pipes are highly suitable for food storage facilities due to their corrosion resistance, ease of cleaning, non-reactive nature, and strength. They provide a safe and hygienic environment for storing food, ensuring the integrity and quality of the stored products.

Q: What is the welding of stainless steel?: If batch welding, it is recommended to use laser welding, welding heat affected area is small, weld appearance, speed, more suitable for thin plate,

Q: Are stainless steel pipes resistant to scaling?: Indeed, scaling is effectively resisted by stainless steel pipes. This term denotes the development of a solid, substantial coating of mineral deposits on the internal surface of pipes, leading to diminished efficiency and restricted fluid flow. Stainless steel pipes possess remarkable resistance to scaling, thanks to their composition that usually incorporates chromium. The inclusion of chromium initiates the creation of a safeguarding oxide layer on the pipe's surface, which hinders scale formation and guarantees enduring durability. Moreover, stainless steel pipes exhibit exceptional corrosion resistance, rendering them highly suitable for various applications prone to scaling.

Q: Where is the difference between seamless steel pipe and welded pipe?: For the steel to withstand the pressure to the hydraulic test to test its ability and quality, leakage, soaked or expansion for qualified does not occur at the prescribed pressure, some steel according to the requirement of standard or edge test, flaring test and flattening test.

Q: What is the difference between 2205 and 316L stainless steel pipes?: The chemical composition and intended applications distinguish 2205 stainless steel pipes from 316L stainless steel pipes. 2205 stainless steel, a duplex stainless steel, consists of two phases - austenite and ferrite. This composition grants it exceptional corrosion resistance, particularly in environments with high chloride content. Industries such as oil and gas, chemical processing, and marine applications commonly employ 2205 stainless steel pipes due to their corrosion resistance and high strength requirements. On the other hand, 316L stainless steel, an austenitic stainless steel, contains lower carbon content compared to other 300 series grades. It exhibits good corrosion resistance, particularly to acids and chloride solutions, making it suitable for various applications like food processing, pharmaceuticals, and medical equipment manufacturing. Regarding mechanical properties, 2205 stainless steel pipes generally possess higher tensile strength and yield strength than 316L stainless steel pipes. Consequently, 2205 pipes are more appropriate for applications necessitating greater strength and load-bearing capabilities. It is vital to acknowledge that both grades of stainless steel pipes possess their respective advantages and limitations. The selection between 2205 and 316L stainless steel pipes depends on the specific application, environmental conditions, and budgetary considerations. Seeking guidance from a materials engineer or stainless steel expert can aid in determining the most suitable grade for a particular project.

Q: How do you prevent contamination in stainless steel pipes?: To prevent contamination in stainless steel pipes, proper cleaning and maintenance practices should be followed. This includes regular inspection and removal of any buildup or deposits, ensuring that the pipes are properly sealed to prevent ingress of contaminants, and avoiding contact with substances that can cause corrosion or contamination. Additionally, implementing a proper filtration system and adhering to recommended hygiene protocols can further prevent contamination in stainless steel pipes.

Q: 310 stainless steel resistance to high temperature?: Features: suitable for making all kinds of furnace components, with a maximum temperature of 1200 degrees, continuous use temperature of 1150 degrees CelsiusUses: furnace materials, materials for automotive cleaning equipment

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