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API Round Thread Casing Coupling

Negotiable MOQ: 20 Pieces (Price negotiable depending on order volume and customization)

Key Specifications

Type:

Coupling

Place of Origin:

Shandong, China

Brand Name:

Shengli Oilfield Ruite Machinery Manufacturing Co., Ltd.

Payment & Shipping

Payment Methods:

Port of Shipment:

Tianjin/Shanghai/Qingdao

Delivery Detail:

Delivery time depends on order quantity.

Type Coupling

Place of Origin Shandong, China

Brand Name RT

Connection Other

Specifications

1. API standard,
2. Short manufacturing period,
3. Low price.

NO	Specification		Minimum length		Bore diameter Qb	Bearing surface width B mm	Weight
NO	OD d mm	OD W mm	Short coupling NL	Long Coupling NL	Bore diameter Qb	Bearing surface width B mm	Short coupling	Long Coupling
1	2	3	4	5	6	7	8	9
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	168.28	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	24.48	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	_
16	406.40	431.80	228.60	_	411.96	5.56	34.91	__
18-5/8	473.08	508.00	228.60	_	478.63	5.56	54.01	_
20	508.00	228.60	228.60	292.10	513.56	5.56	43.42	57.04
The tolerance of the outer diameter of 1, 2 and 3 W ± 1%, but not more than ± 3.18mm. Group 4 OD W tolerance of ± 1% but not more than ±3.18 , -1.59mm. A coupling specifications and code and the corresponding pipe specification B for all groups, the bore diameter tolerances of Q ++0.790 mm