One side of the adapter is ORFS male, the other side of the adapter is BSP male, SST machinery provides both O-rings for these two sides of the adapter, please find the following detailed O-ring spec for your reference. The material of ORFS Male To BSP Male Adapter is carbon steel Q235 or C45 with white good quality of galvanization.

The packaging for ORFS Male To BSP Male Adapter is mass packaging, that is we will package fittings into plastic bag, then boxes and pallets, in this way, our crimped fittings can stand long time sea delivery.

Zinc is soluble in acid and alkali, so it is called amphoteric metal. For steel, zinc coating is a positive coating, which is mainly used to prevent corrosion of steel. The protective and decorative properties of zinc coating can be significantly improved after passivation treatment, dyeing or coating with light protectant. Such as screws, guide rails, as well as hydraulic adapter.

We SST machinery are committed to providing competitive quality products and excellent customer service to our client. We have different clients all over the world, some is End-equipment makers , some is importer for standard or non standard machine parts.  We have different CNC machine for production, and professional technician to control good quality. Welcome to send us the detailed inquiries.

The adapter is manufactured from high grade carbon steel and its design promotes a high-pressure seal. The mounting technology involves the use of a special gasket, which forms a tight seal when the layers of the joint are spaced the correct distance apart and the nuts are tightened. Its unique design provides superior strength and durability in applications where higher pressures and temperatures exist.

How to Measure Pipe and Fitting Sizes

Determining what size pipes you need for your project can be confusing. Many people assume pipe size is the outer diameter of the pipe—but “pipe size” actually refers to what is called “nominal diameter.”

Fittings can be just as confusing. Their inside diameters must be large enough to fit over the pipe's outside diameter. A half-inch plastic elbow, for example, has an outside diameter of about 1-1/4 inches.

Use this guide to help you find the pipe and fitting sizes you need for your next project.

Convert Actual Diameter to Nominal Diameter

The easiest way to find what nominal pipe size you need is to use follow these steps and use the conversion chart below.

For Male Threads 1. Measure the Outside Diameter (OD) of your pipe or pipe fitting: Wrap a string around the pipe Mark the point where the string touches together Use a ruler or measuring tape to find the length between the tip of the string and the mark you made (circumference) Divide the circumference by 3.14159 2. Use the chart on this page to find the nominal diameter (pipe size).

For Female Threads 1. Measure the Inside Diameter (ID) of your pipe or pipe fitting (use a ruler or tape measure). 2. Use the chart on this page to find the nominal diameter (pipe size).

Nominal Diameter Conversion Chart

(All Measurements in Inches)

Outside or Inside Diameter	Decimal Equivalent	Nominal Diameter	Typical Threads Per Inch
5/16	0.313	1/16	27
13/32	0.405	1/8	27
35/64	0.540	1/4	18
43/64	0.675	3/8	18
27/32	0.840	1/2	14
1-3/64	1.050	3/4	14
1-5/16	1.315	1	11-1/2
1-21/32	1.660	1-1/4	11-1/2
1-29/32	1.900	1-1/2	11-1/2
2-3/8	2.375	2	11-1/2
2-7/8	2.875	2-1/2	8
3-1/2	3.500	3	8
4	4.000	3-1/2	8
4-1/2	4.500	4	8

Pipes vs. Tubing

Pipe and tubing are not measured the same way. Tubing is measured and named based on the actual outside diameter of the tube.

PEX, or Cross-Linked Polyethylene Tubing, is another technology fast becoming popular, and it is measured and named by inside diameter.

Example:

Pipe vs. Tubing	Outside Diameter
1/2” size pipe	27/32”
1/2” size tubing	1/2”

Select Thread Type

One of the most common thread types is National Pipe Thread (NPT). These come in male (NPT, MPT, or MNPT) and female (FPT or FNPT). These are usually tapered threads used in joining and sealing pipes.

Another common thread is National Standard Free-Fitting Straight Mechanical Pipe Thread (NPSM). These straight thread pipes are typically used for mechanical joints.

BSP thread form stands for British Standard Pipe. It is based on trade size rather than actual diameter.

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