ASTM A269 Seamless Stainless Steel Pipe

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 1000 m.t./month

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Quick Details

Standard:	JIS,AISI,ASTM,DIN,EN	Place of Origin:	China (Mainland)	Brand Name:	OKORDER
Model Number:	stainless steel pipe	Type:	Seamless	Steel Grade:	300 Series
Application:	stainless steel pipe	Certification:	ISO	Thickness:	1-30
Outer Diameter:	6-530	Quality:	good stainless steel pipe	Brand:	stainless steel pipe

Packaging & Delivery

Packaging Detail:	polywood box
Delivery Detail:	35days

Specifications

ASTM A269 Seamless Stainless Steel Pipe:
Outside diameter from 6mm to 530mm.
Wall thickness from 0.5mm to 38.1mm.

ASTM A269 Seamless Stainless Steel Pipe

1. Material	TP304/304L, 316/316L, 310S, 317L, 321, 347H,etc.
1. Material	S31803, 32750, etc.
2. Standard	ASTM, ASME, DIN, EN, ISO,JIS, GOST, etc.
3. Type	Seamless
4. Size range	OD: from 6mm to 1000mm (NPS from 1/8'' to 40'')
	WT: from 0.7mm to 38mm (Schedule from 5S to XXS)
	Length: fix length or un-fix length, Max 30meters
5. Produce process	Pilgering and cold drawn
6. Surface process	Pickling and annealing
	AP tube
	BA tube
7. Marking	JW, GRADE, seamless, STANDARD, SIZE, HT NO.
8. Package	Bundles with waterproof cloth outside.
8. Package	or plywood box.
9. Min order quantity	500 KG
10. Sample	Yes
11. OEM accepted	Yes
12. Production capacity	300 tons per month
13. Payment term	T/T or L/C.
14. Certificate	ISO 9001, PED
15. Third party ertificate	BV, LR, SGS, TUV, CCS, ABS, etc.

Q:How do stainless steel pipes compare to concrete pipes?: Stainless steel pipes offer several advantages over concrete pipes. Firstly, stainless steel pipes have a higher strength-to-weight ratio, making them lighter and easier to handle during installation. They are also more resistant to corrosion and have a longer lifespan than concrete pipes. Additionally, stainless steel pipes have smoother inner surfaces, enabling better flow rates and reducing the likelihood of blockages. Lastly, stainless steel pipes are more flexible and can withstand temperature variations, making them suitable for a wider range of applications compared to concrete pipes.

Q:What is the difference between 304J9 and 316J9 stainless steel pipes?: The composition and properties of 304J9 and 316J9 stainless steel pipes differ significantly. 304J9 stainless steel pipes are categorized as part of the 304 series, which is a widely utilized austenitic stainless steel grade. This grade is composed of 18% chromium and 8% nickel, resulting in commendable corrosion resistance and excellent formability. It finds extensive applications across various industries, such as construction, food processing, and pharmaceuticals. On the contrary, 316J9 stainless steel pipes belong to the 316 series, an upgraded version of the 304 series. The composition of the 316 series includes 16-18% chromium, 10-14% nickel, and 2-3% molybdenum. The addition of molybdenum notably enhances its corrosion resistance, particularly in environments containing chlorides or other corrosive agents. Consequently, 316J9 stainless steel pipes are commonly employed in marine applications, chemical processing, and coastal settings. Regarding mechanical properties, 316J9 stainless steel pipes generally exhibit superior tensile strength and yield strength when compared to 304J9 stainless steel pipes. This increased strength is primarily attributed to the inclusion of molybdenum, which improves the alloy's capacity to endure stress and deformation. Moreover, the presence of molybdenum in 316J9 stainless steel pipes also enhances their resistance against pitting and crevice corrosion, making them more suitable for aggressive environments. However, it is essential to note that 316J9 stainless steel pipes may prove more costly than 304J9 stainless steel pipes due to the higher alloy content. Ultimately, the selection between 304J9 and 316J9 stainless steel pipes is contingent upon the specific application and the desired level of corrosion resistance. While 304J9 stainless steel pipes offer satisfactory general corrosion resistance, 316J9 stainless steel pipes present superior resistance in harsher environments.

Q:Are stainless steel pipes suitable for industrial applications?: Yes, stainless steel pipes are highly suitable for industrial applications. They possess excellent corrosion resistance, high strength, and durability, making them ideal for handling various fluids and gases in industrial settings. Additionally, stainless steel pipes can withstand high temperatures and pressure, making them reliable for demanding industrial processes.

Q:Can stainless steel pipes be painted or coated?: Yes, stainless steel pipes can be painted or coated. However, it is essential to choose the appropriate paint or coating that is specifically designed for stainless steel to ensure proper adhesion and long-term durability. Additionally, the surface of the stainless steel pipes should be thoroughly cleaned and prepared before applying any paint or coating.

Q:What is the difference between duplex and super duplex stainless steel pipes?: Duplex and super duplex stainless steel pipes are variations of stainless steel that have enhanced corrosion resistance and superior strength compared to traditional stainless steel pipes. However, there are some important distinctions between the two. Duplex stainless steel pipes consist of a mixture of austenite and ferrite phases, with approximately equal amounts of each. This well-balanced composition provides excellent resistance to stress corrosion cracking, pitting, and crevice corrosion. Additionally, duplex stainless steel pipes have higher strength than austenitic stainless steels, making them suitable for applications that require increased mechanical strength. In contrast, super duplex stainless steel pipes have a higher concentration of alloying elements like chromium, molybdenum, and nitrogen. This leads to a microstructure with a greater proportion of ferrite phase, further enhancing the material's corrosion resistance and strength. Super duplex stainless steel pipes are particularly resistant to chlorides, making them ideal for applications exposed to aggressive environments such as seawater, chemical processing, and the oil and gas industries. Regarding mechanical properties, super duplex stainless steel pipes generally possess higher tensile strength and yield strength compared to duplex stainless steel pipes. This heightened strength enables super duplex stainless steel pipes to withstand greater pressures and temperatures. Both duplex and super duplex stainless steel pipes offer exceptional corrosion resistance, but the super duplex variation provides superior resistance to a wider range of corrosive environments. It is important to note, however, that super duplex stainless steel pipes are more costly than duplex stainless steel pipes due to their higher alloy content. Ultimately, the choice between duplex and super duplex stainless steel pipes hinges on specific application requirements, such as the severity of the corrosive environment, necessary mechanical strength, and budgetary considerations.

Q:What are the common industry standards for stainless steel pipes?: The common industry standards for stainless steel pipes vary depending on the intended application and country-specific regulations. However, some widely recognized and accepted standards include ASTM (American Society for Testing and Materials) standards, ASME (American Society of Mechanical Engineers) standards, and ISO (International Organization for Standardization) standards. ASTM standards, such as ASTM A312 and ASTM A269, provide guidelines for the manufacturing and quality control of stainless steel pipes. These standards cover various aspects, including chemical composition, mechanical properties, dimensions, and tolerances. ASME standards, particularly ASME B36.19 and ASME B36.10M, outline the dimensions and wall thicknesses of stainless steel pipes for specific applications. Additionally, ASME B31.3 provides guidelines for the design, construction, and maintenance of process piping systems that may include stainless steel pipes. ISO standards, such as ISO 1127 and ISO 2037, provide international guidelines for the dimensions, tolerances, and surface finishes of stainless steel pipes. These standards ensure compatibility and interchangeability of stainless steel pipes across different countries. In addition to these standards, specific industries may have their own requirements. For example, the food and beverage industry often adheres to standards set by organizations like 3-A Sanitary Standards, which focus on the cleanliness and hygiene of stainless steel pipes used in food processing. It's important to consult the relevant standards and regulations for each specific application to ensure compliance with industry requirements and to ensure the safe and efficient use of stainless steel pipes.

Q:Can stainless steel pipes be fabricated?: Indeed, it is possible to fabricate stainless steel pipes. Stainless steel possesses remarkable versatility, enabling it to be effortlessly manipulated and formed into different dimensions and configurations. By employing fabrication techniques like cutting, bending, welding, and threading, stainless steel pipes can be tailored to meet specific demands. These pipes find application across a wide range of industries, encompassing construction, automotive, oil and gas, plumbing, and more. The corrosion resistance and durability inherent in stainless steel render it a perfect candidate for fabricating pipes that must endure rigorous environmental circumstances.

Q:What is the maximum pressure rating for stainless steel pipe fittings?: There are several factors that contribute to the maximum pressure rating of stainless steel pipe fittings, including the material grade, size, and temperature. In general, stainless steel pipe fittings have the ability to handle high-pressure applications due to their strength and resistance to corrosion. The pressure rating of these fittings can vary greatly, ranging from 150 psi to as high as 10,000 psi, depending on the specific fitting and its intended use. To determine the maximum pressure rating for a particular stainless steel pipe fitting, it is important to refer to the manufacturer's documentation or industry standards such as ASME B16.11 or ASME B16.9. Additionally, when working with high-pressure systems, other factors such as the sealing method, compatibility with the conveyed fluid, and any necessary safety precautions must be taken into consideration.

Q:How do stainless steel pipes compare to brass pipes?: Stainless steel pipes and brass pipes are both popular choices for various plumbing and industrial applications, but they have distinct differences that make them suitable for different circumstances. Firstly, stainless steel pipes are known for their exceptional durability and corrosion resistance. They can withstand high-pressure environments and are highly resistant to rust and corrosion, making them ideal for applications in harsh conditions or where water quality is a concern. Stainless steel pipes also have a higher melting point than brass pipes, which allows them to handle extreme temperatures without compromising their structural integrity. On the other hand, brass pipes are valued for their excellent thermal conductivity and malleability. They are often used in plumbing systems as they are easy to bend and shape, allowing for greater flexibility during installation. Brass pipes are also known for their aesthetic appeal, as they have a warm, golden color that can enhance the visual appeal of a space. In terms of cost, brass pipes tend to be more expensive than stainless steel pipes. However, brass pipes often have a longer lifespan and require less maintenance, which can offset the initial higher cost. Another factor to consider is the environmental impact. Stainless steel is a highly sustainable material as it is 100% recyclable, making it an eco-friendly choice. Brass, on the other hand, requires a significant amount of energy to produce and is less recyclable than stainless steel. Ultimately, the choice between stainless steel and brass pipes depends on the specific requirements of the project. If durability, corrosion resistance, and long-term reliability are the primary considerations, stainless steel pipes are the preferred option. However, if thermal conductivity, malleability, and aesthetic appeal are more important, brass pipes may be the better choice.

Q:How can the inner walls of stainless steel tubes be polished?: 1) (used in polishing the inner surface polishing machine): rod is thrown into the tube to drive the impeller 1000 or homemade abrasive wheel rotating speed, and with the rotation of the polishing pipe itself, while rotating slowly forward throwing rod. Generally speaking, first use the 60#-80# wheel of Chiba or abrasive belt wheel for rough throwing, and then gradually fine throwing with high precision according to the requirement of smoothness. Large size pipe 6, more than the general use of thousands of impeller, small size of the pipe can be made with homemade abrasive belt wheel, you can reduce costs.

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