API 11B sucker rod sub coupling | FRT Machinery

API 11B sucker rod sub coupling

Our company produced coupling including sucker rod coupling, sub-coupling and spray coupling, they are design according to API Spec 11 B standard. Using the high quality carbon steel or alloy steel (the equivalent of AISI 1045 and AISI 4135) and plating metal is a kind of surface hardening technology, is the nickel, chromium, boron and silicon powder coated on the substrate metal and fused with the laser processing, after the process, the metal surface makes harder, density higher and more uniform, the friction coefficient is very low and the corrosion resistance is very high. Slim hole (SH) diameter and standard size (FS) of conventional sucker rod and polished rod have plating metal (SM) .Under normal circumstances, there is two wrench on the coupling and the outside circle, but according to user we can also provide no wrench square. Hardness of coupling T is HRA56-62 after heat treatment, with good corrosion resistance and wear resistance, when using sucker rod coupling, is connecting with the same size rod, sub-coupling is used for connecting to difference size of the sucker rod or connect the polished rod and rod string .Coupling type: Class T (full size and slim hole ) ,Class SM (full size and slim hole ).

Description

Nominal Size

5/8 in.

3/4 in.

7/8 in.

1 in.

1-1/8 in.

Coupling Chemical Component

AISI	C	Si	Mn	P	S	Cr	Ni	Cu	Al
1541	0.36-0.45	0.15-0.35	1.35-1.65	≤0.04	≤0.04	≤;0.3	≤0.35	≤0.35	≤0.035
5140	0.38-0.45	0.17-0.37	0.4-0.7	≤0.025	≤0.025	0.8-1.1	≤0.3	≤0.2	/
4135	0.32-0.40	0.17-0.37	0.4-0.7	≤0.025	≤0.025	0.8-1.1	≤0.3	≤0.2	/
4120	0.17-0.24	0.17-0.37	0.4-0.7	≤0.025	≤0.025	0.8-1.1	≤0.3	≤;0.2	/

Mechanical properties

Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Reduction of Area (%)
≥655	≥405	≥16	≥48

Hardness	GRADE T	GRADE SM
Hardness	56HRA-62HRA	＞595HV200

Packing&Shipping

1. All couplings will be packaged in plywood wooden box.

2. Goods can be delivered by sea, train, air, truck, etc.

Company Introduction

The market share of FRT Machinery is growing steadily and rapidly. Our products have a presence in more than 50 countries and regions in the world, covering North America, Latin America, Russia and Central Asia, the Middle East, Asia Pacific, Europe and Africa.

FRT regards continuous learning ability as one of the company"s core competitiveness and provides regular training to employees to enhance their comprehensive abilities and skills. We are committed to focusing on the challenges and pressures of customers' attention, providing competitive solutions and continuously creating the maximum value for customers. Safety and environmental and social responsibility are at the core of all our business activities.

FRT has a skilled and experienced after sales team geared up for fast response and superior services to our customers at any time. Our Long distance monitoring center is equipped to monitor, diagnose, serve and manage the units delivered. XRR also provides technical training to our customers at regular intervals.