Stainless Steel Welded Pipe ASTM A312/A358/A316

Stainless Steel Welded Pipe ASTM A312/A358/A316 System 1

Stainless Steel Welded Pipe ASTM A312/A358/A316

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Loading Port:: China main port

Payment Terms:: TT or LC

Min Order Qty:: 45 m.t.

Supply Capability:: 9000 m.t./month

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1、Structure of Stainless Steel Welded Pipe ASTM A358/A312/A316 Description：

Stainless steel welded pipe is actually a cover term, covering a wide range of alloy and making them suitable for different attributes that are used in a very wide and large numbers of different industries. Stainless steel pipe is resistant to erosion, highly flexible, powerful, easy to use, and can be done in distinct approaches, which means that more and more stainless steel was used as a construction material for large-scale, high impact buildings

2、Main Features of the Stainless Steel Welded Pipe ASTM A358/A312/A316：

• High manufacturing accuracy

• High strength

• Small inertia resistance

• Strong heat dissipation ability

3、Stainless Steel Welded Pipe ASTM A358/A312/A316 Images：

Stainless Steel Welded Pipe ASTM A312/A358/A316

4、Stainless Steel Welded Pipe ASTM A358/A312/A778 Specification：

Size：

Outside diameter		Outside	Thickness
Outside diameter		Outside	SCH 5S	SCH 10S	SCH 20S	SCH 40S
(A)	(B)	mm	mm	mm	mm	mm
350	14′	355.6	3.96	4.78	7.92	11.13
400	16′	406.4	4.19	4.78	7.92	12.7
450	18′	457.2	4.19	4.78	7.92	14.27
500	20′	508	4.78	5.54	9.53	15.09
550	22′	558.8	4.78	5.54	9.53	15.09
600	24′	609.6	5.54	6.35	9.53	17.48
650	26′	660.4	5.54	7.92	12.7	17.48
700	28′	711.2	5.54	7.92	12.7	17.48
750	30′	762	6.35	7.92	12.7	17.48
800	32′	812.8		7.9	12.7	17.48
850	34	863.6		7.92	12.7	17.48
900	36′	914.4		7.92	12.7	19.05
1000	40′	1016		9.53

Tolerances on dimensions table：

Standard	Outside(mm)		Thickness(mm)	Length(mm)
ASTM A312	≤48.26	-0.4	+No special provisions(Unspecified)-12.50%	Appoint LengthDefinite cut length+6.40
	＞48.26~114.30	0		0
	＞114.30~219.08	0.8
	＞219.08~457.20	1.6
	＞457~660	-4
	＞660~864	-5
	＞864~1219	-5.6
JIS G3459	＜30.00 ±0.30≥30.00 ±1.00%		＜2.00 ±0.20≥2.00 ±10%	Appoint LengthDefinite cut Length
GB/T 12771	＜13.00 ±0.2013.00~40.00 ±0.30≥40.00 ±0.80%		≤4.00 +0.50 -0.60＞4.00 ±10%	20
EN 10217-7	D1±1.50% with±0.75mm(min)D2±1.00% with±0.50mm(min)D3±0.75% with±0.30mm(min)		T1±15.00% with±0.60mm(min)T2±12.5% with±0.40mm(min)T3±10.00% with±0.20mm(min)	≤6000 +5.00 -06000~12000 +10.00 -0
	D4±0.5% with±0.10mm(min)		T4±7.50% with±0.15mm(min)
			T5±5.00% with±0.10mm(min)
			EN ISO 1127

5、FAQ of Stainless Steel Welded Pipe ASTM A358/A312/A778：

①How is the quality of your products?
Our products are manufactured strictly according to national and internaional standard, and we take a test on every pipe before delivered out. If you want see our quality certifications and all kinds of testing report, please just ask us for it.
.

②How about price?
Yes, we are factory and be able to give you lowest price below market one, and we have a policy that “ for saving time and absolutely honest business attitude, we quote as lowest as possible for any customer, and discount can be given according to quantity”,if you like bargain and factory price is not low enough as you think, just don’t waste your time

③Why should you chose us?
Chose happens because of quality, then price, We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.Our service formula: good quality+good price+good service=customer’s trust

Q: Can steel pipes be used for chemical refineries?: Yes, steel pipes can be used for chemical refineries. Steel pipes are commonly used in chemical refineries due to their high strength, durability, and resistance to corrosion. The harsh environment of a chemical refinery, which involves exposure to corrosive chemicals and extreme temperatures, requires materials that can withstand these conditions. Steel pipes are able to handle these challenges and are often chosen for their ability to transport various fluids and gases safely and efficiently. Additionally, steel pipes can be welded, which allows for easy installation and maintenance in complex refinery systems. Overall, steel pipes are a suitable choice for chemical refineries due to their robustness, corrosion resistance, and compatibility with the demanding conditions of this industry.

Q: What is the difference between steel pipes and PVC-M pipes?: Steel pipes are made of a strong and durable metal, while PVC-M pipes are made of a thermoplastic material known as polyvinyl chloride modified. The main difference lies in their composition and characteristics. Steel pipes are typically heavier and more robust, offering greater strength and resistance to high pressure and temperature. On the other hand, PVC-M pipes are lightweight, flexible, and corrosion-resistant, making them ideal for applications where chemical resistance and ease of installation are crucial factors.

Q: What is the average lifespan of a steel pipe?: The average lifespan of a steel pipe can vary depending on various factors such as the quality of the steel, the environment it is exposed to, and the maintenance practices followed. However, on average, a well-maintained steel pipe can last anywhere between 20 to 100 years.

Q: How are steel pipes used in the construction of stormwater drainage systems?: Steel pipes are commonly used in the construction of stormwater drainage systems due to their durability and strength. They serve as underground conduits to efficiently transport stormwater away from built-up areas, preventing flooding and water damage. Steel pipes offer high resistance to external pressure and are capable of withstanding heavy loads, making them suitable for underground installations. Additionally, their corrosion-resistant properties ensure long-term effectiveness and minimize maintenance requirements. Overall, steel pipes are essential components in stormwater drainage systems, providing reliable and efficient water management solutions.

Q: How are steel pipes insulated for thermal purposes?: Various methods are commonly employed to insulate steel pipes for thermal purposes. One method frequently utilized involves wrapping the pipes with insulation materials like fiberglass, mineral wool, or foam. These materials act as a barrier between the pipe and its surroundings, effectively preventing heat transfer or loss. To ensure the proper insulation of steel pipes, the insulation material is typically tightly wrapped around the pipe, leaving no gaps or openings for heat to escape. Adhesive tapes or metal bands are then used to secure the insulation in place. In addition to external insulation, internal insulation can also be applied to steel pipes. This involves placing insulation material inside the pipe, creating a protective layer against heat loss or gain. Internal insulation is commonly utilized in situations where the pipe carries hot fluids or gases. Moreover, certain steel pipes are designed to incorporate a built-in insulation layer. These pipes, known as pre-insulated pipes, already come equipped with insulation material integrated into their structure. The insulation layer is typically made of foam or mineral wool and is covered with a protective outer layer, ensuring effective thermal insulation. The insulation of steel pipes for thermal purposes plays a critical role in various industries, including oil and gas, HVAC, and plumbing. Proper insulation helps to maintain the desired temperature of fluids or gases flowing through the pipes, preventing energy loss and enhancing overall efficiency.

Q: How are steel pipes protected against internal corrosion?: Steel pipes are protected against internal corrosion through the use of various methods such as coating the inner surface with corrosion-resistant materials, applying chemical inhibitors to the fluid being transported, and implementing cathodic protection systems.

Q: What are the different sizes available for steel pipes?: Steel pipes are available in a wide range of sizes, ranging from small diameters as small as 1/8 inch to larger diameters exceeding 72 inches. The sizes of steel pipes are typically measured based on their outside diameter (OD) and wall thickness, with various standard sizes available to meet different application requirements.

Q: What are the common sizes of steel pipe fittings?: Depending on the particular application and industry regulations, the sizes of steel pipe fittings can vary. Nevertheless, there are numerous standard sizes that are commonly utilized in various industries. These sizes encompass a range from ¼ inch to 48 inches in diameter. Among the most frequently used sizes are ½ inch, ¾ inch, 1 inch, 1 ¼ inch, 1 ½ inch, 2 inch, 2 ½ inch, 3 inch, 4 inch, 6 inch, 8 inch, 10 inch, 12 inch, 14 inch, 16 inch, 18 inch, 20 inch, 24 inch, 30 inch, 36 inch, 42 inch, and 48 inch. These sizes are often obtainable in different lengths to accommodate diverse installation requirements. To determine the appropriate size of steel pipe fittings for a specific project, it is crucial to refer to industry standards and specifications.

Q: How are steel pipes stored and transported?: To ensure the safety and prevent damage of steel pipes, a systematic and efficient approach is employed for their storage and transportation. In terms of storage, designated areas are used to either horizontally or vertically stack the pipes. In the case of vertical stacking, custom-made racks or stands are utilized to provide support and prevent rolling or collapsing. This method not only saves space but also allows for easy accessibility when required. To safeguard steel pipes against corrosion and environmental elements, a layer of paint or other protective materials is often applied. Furthermore, pipes may be stored indoors in warehouses or storage facilities to shield them from unfavorable weather conditions. In terms of transportation, depending on the distance and destination, steel pipes are typically loaded onto trucks, railcars, or ships. Specialized equipment such as cranes or forklifts is employed to handle and load the pipes onto these vehicles. To prevent movement during transit, the pipes are tightly secured using straps, chains, or braces. This ensures stability and eliminates the risk of damage to the pipes themselves or other cargo. For long-distance transportation, steel pipes are often transported in bundles or stacks, reinforced to provide additional security. They may also be packed in protective coverings or containers to shield them from moisture, dust, or impacts. Overall, the storage and transportation of steel pipes necessitate meticulous planning, proper handling, and appropriate protective measures to uphold their integrity and quality throughout the entire process.

Q: How do you prevent steel pipes from freezing?: To avoid freezing of steel pipes, there are several actions that can be taken: 1. Insulate the pipes: Utilize foam insulation sleeves or wrap the pipes with insulation tape. This will help maintain the temperature of the pipes and prevent freezing. 2. Seal any gaps or cracks: Examine the area surrounding the pipes and seal any gaps or cracks using caulk or expanding foam. This will prevent cold air from entering and causing freezing. 3. Install heat cables: Wrap heat cables around the steel pipes to provide a constant source of warmth. These cables can be controlled by a thermostat, ensuring that the pipes remain above freezing temperature. 4. Maintain above-freezing temperature: In regions with severe cold weather, it is recommended to keep the indoor temperature above freezing, even if the property is unoccupied. This will help maintain a suitable temperature for the pipes and prevent freezing. 5. Open cabinets and faucets: During extremely cold weather, open cabinet doors in kitchens and bathrooms to allow warm air to circulate around the pipes. Additionally, allowing faucets to drip slightly can keep water flowing and prevent freezing. 6. Drain the pipes: If the property will be vacant during freezing weather, it is advisable to completely drain the pipes. This can be achieved by shutting off the main water supply and opening all faucets until no water remains. This minimizes the risk of freezing and potential damage. Remember, taking preventive measures is vital in safeguarding steel pipes against freezing. By implementing these actions, you can significantly reduce the chances of frozen pipes and costly repairs.

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