Seamless Casing Steel Pipe 2

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1. Seamless Casing Steel Pipe Specifications

1) Grade:H-40,J-55,K-55,N-80,C-75,L-80,C-90,C-95,P-110,Q-125

2) Size: 4 1/2", 5", 5 1/2", 6 5/8", 7", 7 5/8", 9 5/8", 10 3/4", 13 3/8", 16", 18 5/8", 20"

3) Wall thickness: 5.11 - 16.13 mm

4) Clasp Type : STC, LTC, BTC

5) Length : R1,R2,R3

6) Products comply with API SPEC 5CT standards, and use for API 5CT emblem

2. Round thread casing coupling size quality and tolerance:

Code	Specification	Diameter W /mm	Min Length		Boring diameter /mm	Width of bearing surferingb/mm	Weight
	Diameter D /mm		Short coupling Nl	Coupling length Nl			short couping	Coupling length
4-1/2	114.30	127.00	158.75	177.80	116.68	3.97	3.62	4.15
5	127.00	141.30	165.10	196.85	129.38	4.76	4.66	5.75
5-1/2	139.70	153.67	171.45	203.20	142.08	3.18	5.23	6.42
6-5/8	168.26	187.71	184.15	222.25	170.66	6.35	9.12	11.34
7	177.80	194.46	184.15	228.60	180.18	4.76	8.39	10.83
7-5/8	193.70	215.90	190.50	234.95	197.64	5.56	12.30	15.63
8-5/8	219.08	244.48	196.85	254.00	223.04	6.35	16.23	21.67
9-5/8	244.48	269.88	196.85	266.70	248.44	6.35	18.03	25.45
10-3/4	273.05	298.45	203.20	---	277.02	6.35	20.78	---
11-3/4	298.45	323.85	203.20	---	302.42	6.35	22.64	---
13-3/8	339.72	365.12	203.20	---	343.69	5.56	25.66	---

Chemical composition:

Standard codes	Models of steel tubes	Chemical compositions
		C	Si	Mn	P	S	Cr	Ni	Cu	Mo	V	Als
API SPEC 5CT	J55K55 (37Mn5)	0.340.39	0.200.35	1.251.50	≤0.020	≤0.015	≤0.15	≤0.20	≤0.20	≤0.020
	N80 (36 Mn2V)	0.340.38	0.200.35	1.451.70	≤0.020	≤0.015	≤0.15	0.110.16	≤0.020
	L80(13Cr)	0.150.22	≤1.00	0.251.00	≤0.020	≤0.010	12.014.0	≤0.20	≤0.20	≤0.020
	P110 (30CrMo)	0.260.35	0.170.37	0.400.70	≤0.020	≤0.010	0.801.10	≤0.20	≤0.20	0.150.25	≤0.08	≤0.0

Standard codes

Models of steel tubes

Chemical compositions

Als

API SPEC 5CT

J55K55
(37Mn5)

0.340.39

0.200.35

1.251.50

≤0.020

≤0.015

≤0.15

≤0.20

≤0.020

N80
(36 Mn2V)

0.340.38

0.200.35

1.451.70

≤0.020

≤0.015

≤0.15

0.110.16

≤0.020

L80(13Cr)

0.150.22

≤1.00

0.251.00

≤0.020

≤0.010

12.014.0

≤0.20

≤0.020

P110
(30CrMo)

0.260.35

0.170.37

0.400.70

≤0.020

≤0.010

0.801.10

≤0.20

0.150.25

≤0.08

≤0.0

3. FAQ of Seamless Casing Steel Pipe:

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.
Guaranteed: If products’ quality don’t accord to discription as we give or the promise before you place order, we promise 100% refund.

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.Please trust the quotation we would give you, it is professional one.

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

Any question, pls feel free to contact us !

4、Seamless Casing Steel Pipe Images：

Seamless Casing Steel Pipe 2

Q: What are the safety precautions to follow while working with steel pipes?: When working with steel pipes, it is important to follow certain safety precautions to ensure a safe working environment. Here are some key safety measures to consider: 1. Personal Protective Equipment (PPE): Always wear appropriate PPE, including safety goggles, gloves, steel-toed boots, and a hard hat. This will protect you from potential hazards such as falling objects, sharp edges, or flying particles. 2. Use proper lifting techniques: Steel pipes can be heavy and awkward to handle. Use proper lifting techniques, such as bending your knees and using your legs to lift, to avoid straining your back or causing musculoskeletal injuries. 3. Secure the work area: Clear the work area of any clutter or obstacles that could pose a tripping hazard. Ensure that the pipes are properly stored and secured to prevent them from rolling or falling. 4. Be cautious of sharp edges: Steel pipes often have sharp edges, which can cause cuts or punctures. Handle them with care and consider using protective covers or gloves to avoid injuries. 5. Use appropriate tools: Utilize the correct tools and equipment for cutting, welding, or manipulating steel pipes. Follow manufacturer instructions and guidelines to ensure safe usage. 6. Avoid working in confined spaces: Working in confined spaces poses serious risks. If it is necessary to work in such an area, ensure proper ventilation and follow confined space entry protocols to prevent asphyxiation or other hazards. 7. Follow proper welding procedures: If welding is involved, follow proper welding procedures and ensure proper ventilation in the workspace. Use fire-resistant blankets or screens to protect nearby combustible materials. 8. Be aware of hot surfaces: Steel pipes can become hot during welding or other processes. Use appropriate insulation or heat-resistant gloves to protect yourself from burns or heat-related injuries. 9. Establish communication: Establish clear communication channels with colleagues when working with steel pipes, especially when lifting or moving heavy objects. Use hand signals or verbal communication to ensure everyone is on the same page and to prevent accidents. 10. Regularly inspect tools and equipment: Before starting any task, inspect tools, equipment, and scaffolding for any damage or defects. Report and replace any faulty equipment to prevent accidents. Remember, safety is paramount when working with steel pipes. By following these precautions and using common sense, you can ensure a safe working environment for yourself and your colleagues.

Q: Can steel pipes be used for fire sprinkler systems?: Yes, steel pipes can be used for fire sprinkler systems.

Q: What is the standard length of steel pipes?: The standard length of steel pipes varies depending on the industry and application. However, common standard lengths for steel pipes range from 18 to 22 feet, with some variations based on specific requirements or international standards.

Q: How are steel pipes used in the manufacturing of bicycles?: Steel pipes are used in the manufacturing of bicycles as they provide a strong and durable framework for the bicycle's structure. These pipes are typically used to construct the frame, handlebars, and seat post, ensuring stability and support for the rider. Additionally, steel pipes allow for customization and flexibility in design, allowing manufacturers to create various types and styles of bicycles to suit different riding needs.

Q: Can steel pipes be used in extremely cold temperatures?: Indeed, steel pipes are capable of being utilized in frigid temperatures. Renowned for its robustness and endurance, steel proves itself suitable for a plethora of applications, even in the most extreme wintry conditions. Steel pipes exhibit a remarkable resistance to low temperatures, withstanding the detrimental effects of freezing without compromising their structural integrity. Consequently, they prove to be ideal for deployment in industries such as oil and gas, where they encounter sub-zero environments. Moreover, the option to insulate or coat steel pipes further fortifies them against the cold, preemptively averting issues like freezing or cracking. In summary, steel pipes unquestionably represent a trustworthy choice for deployment in exceedingly cold temperatures.

Q: How are steel pipes protected against UV radiation?: Steel pipes are typically protected against UV radiation through the application of coatings or paints that contain UV inhibitors. These coatings act as a barrier between the steel surface and the harmful UV rays, preventing damage and degradation of the pipes over time. Additionally, some steel pipes may be treated with zinc or other metals, which offer inherent UV protection and enhance the overall durability of the pipes.

Q: What's the actual size of the DN25?: DN25 refers to the theoretical size of the inner hole of the pipe. That is to say, the theoretical dimension of the inner diameter of the pipe is 25 (the metric tube refers to the inner diameter, and the English tube is also to indicate the inner diameter, for example: 3/8, the inner diameter is 9.525, and the diameter of the 1/2 is 12.7, and the diameter of the 5/8 is 15.875). The outer diameter is theoretical in diameter, plus the wall thickness specified by the state (which is artificially specified and has no formula)The theoretical diameter of DN25 is 25, and the outer diameter is Phi 33.7 and phi 32(but there is also the outside diameter of the mark. The mark is: the outer diameter * wall thickness, such as: 32 * 2, that is to say, the outer diameter is 30, the inner diameter is 26)

Q: Can steel pipes be used for underground fire hydrants?: Steel pipes are a suitable choice for underground fire hydrants due to their durability, strength, and corrosion resistance. They are commonly used in underground water supply systems, including fire hydrant installations. Furthermore, steel pipes can withstand high water pressures and offer a reliable and long-lasting solution for fire hydrants. However, it is important to ensure that the steel pipes used for underground fire hydrants are adequately coated or lined to prevent corrosion and maintain their structural integrity over time. Regular maintenance and inspections should also be carried out to detect and resolve any potential problems that may arise.

Q: What are the different methods of pipe repair for steel pipes?: There are several methods for repairing steel pipes, including spot repair, slip lining, pipe bursting, and pipe relining. Spot repair involves cutting out and replacing a small section of the damaged pipe. Slip lining involves inserting a smaller diameter pipe into the existing pipe to reinforce it. Pipe bursting involves breaking the old pipe while simultaneously installing a new one. Pipe relining involves inserting a liner into the damaged pipe and then curing it in place to create a new, seamless pipe within the existing one. The choice of method depends on the extent and location of the damage, as well as budget and time constraints.

Q: What are the advantages of using steel pipes in the manufacturing industry?: There are several advantages of using steel pipes in the manufacturing industry. Firstly, steel pipes are known for their high strength and durability, making them ideal for carrying heavy loads and withstanding harsh conditions. Secondly, steel pipes have excellent resistance to corrosion, reducing the risk of leaks and ensuring a longer lifespan. Additionally, steel pipes offer a wide range of sizes and shapes, allowing for flexibility in design and easy customization. Furthermore, steel pipes are cost-effective compared to other materials, as they require minimal maintenance and have a low risk of failure. Lastly, steel pipes are environmentally friendly, as they are fully recyclable and contribute to reducing carbon emissions during manufacturing. Overall, the advantages of using steel pipes in the manufacturing industry make them a reliable and efficient choice for various applications.

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