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:How do steel pipes handle thermal expansion?: Steel pipes handle thermal expansion by expanding and contracting with changes in temperature. The high thermal conductivity of steel allows it to transfer heat quickly, preventing excessive expansion. Additionally, the flexibility of steel allows it to absorb the expansion and contraction without compromising the integrity of the pipe.

Q:What are the different methods of pipe lining for steel pipes?: Some of the different methods of pipe lining for steel pipes include slip lining, cured-in-place pipe lining (CIPP), pipe bursting, and sliplining. Slip lining involves inserting a smaller diameter pipe into the existing steel pipe, while CIPP involves inserting a resin-impregnated liner into the pipe and curing it in place. Pipe bursting involves breaking the existing steel pipe and replacing it with a new pipe, while sliplining involves inserting a new pipe into the existing steel pipe without breaking it.

Q:How are steel pipes used in the manufacturing of boilers and heat exchangers?: Steel pipes are used in the manufacturing of boilers and heat exchangers primarily for their excellent strength, durability, and heat resistance properties. These pipes are used to carry hot fluids and gases, such as water and steam, throughout the boiler or heat exchanger system. The steel pipes provide a reliable and efficient means of transferring heat and maintaining the desired temperature within the system. Additionally, their corrosion resistance ensures long-lasting performance, making them an essential component in the manufacturing of boilers and heat exchangers.

Q:Can steel pipes be recycled?: Yes, steel pipes can be recycled. Steel is a highly recyclable material, and the recycling process for steel pipes involves melting them down to create new steel products. Recycling steel pipes not only conserves natural resources but also reduces energy consumption and carbon emissions associated with the production of new steel.

Q:Can steel pipes be used for petrochemical plants?: Yes, steel pipes can be used for petrochemical plants. Steel pipes are often preferred in petrochemical plants due to their high strength, durability, and resistance to corrosion, making them ideal for handling various chemicals and substances involved in petrochemical processes. Additionally, steel pipes can withstand high pressure and temperature conditions commonly encountered in petrochemical plants, making them a reliable choice for transporting fluids and gases.

Q:What does "spiral welded steel pipe" DN325*10 mean?: Spiral welded steel pipe with nominal diameter of 325mm and wall thickness of 10mm

Q:What are the common grades of steel used in pipes?: The common grades of steel used in pipes include ASTM A53, ASTM A106, and API 5L.

Q:Are steel pipes suitable for use in coastal areas?: Yes, steel pipes are suitable for use in coastal areas. Steel is known for its durability and resistance to corrosion, which makes it a reliable choice for withstanding the harsh conditions of coastal regions, including exposure to saltwater and high levels of humidity. Additionally, steel pipes can be coated or galvanized to provide extra protection against corrosion, ensuring their longevity and performance in coastal environments.

Q:Are steel pipes suitable for underground cable protection?: Yes, steel pipes are suitable for underground cable protection. Steel pipes provide excellent mechanical strength and durability, protecting cables from external forces such as ground movement or accidental damage. They also offer resistance to corrosion, making them a reliable choice for long-term cable protection in underground installations.

Q:How are steel pipes used in the manufacturing of automotive exhaust systems?: Steel pipes are commonly used in the manufacturing of automotive exhaust systems as they possess high strength, durability, and resistance to heat and corrosion. These pipes are used to transport exhaust gases from the engine to the tailpipe, ensuring the safe and efficient operation of the vehicle. They are typically bent and welded together to create a complex network of pipes that helps direct the flow of exhaust gases and reduce noise levels. Overall, steel pipes play a crucial role in the construction of automotive exhaust systems, contributing to their reliability and longevity.

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