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COPPER TO IRON PIPE CONVERSION

COPPER PIPE TO IRON PIPE CONVERSION

Because the outside diameters (OD) of small copper pipes are so similar in size to the OD's of small iron pipe sizes, the fiberglass pipe insulation manufacturers only make the iron pipe sizes and use substitute sizes for the copper pipes. The reason for this is so they do not have to produce two nearly identical size products.

Certain copper pipe sizes are not close to any iron pipe sizes so they have their own copper pipe insulation size (1/2" Copper, 2" Copper and above).

For example: 1/2" Copper pipes have their own pipe size 5/8". But 3/4" Copper (0.92") is very similar in OD to the 1/2" iron pipe size (0.84") so they would both use 1/2" IPS pipe insulation.

To use this chart below, simply pick out your size copper pipe and you will order the IPS size in blue to the right of it.

Example: If you have a 1" Copper pipe, you would order 3/4 x 1/2 (1/2" thickness), 3/4 x 1 (1" thickness), etc.

COPPER PIPE SIZE                    IRON PIPE SIZE TO ORDER

1/2" Copper                                       5/8" Copper

3/4" Copper                                       1/2" IPS

7/8" Copper                                       1/2" IPS

1" Copper                                           3/4" IPS

1-1/8" Copper                                     3/4" IPS

1-1/4" Copper                                     1" IPS

1-3/8" Copper                                     1" IPS

1-1/2" Copper                                     1-1/4" IPS

1-5/8" Copper                                     1-1/4" IPS

2" Copper                                            2-1/8" Copper 

2-1/2" Copper                                      2-5/8" Copper

3" Copper                                            3-1/8" Copper

3-1/2" Copper                                      3" IPS

4" Copper                                            4-1/8" Copper

5" Copper                                            5-1/8" Copper

6" Copper                                            6-1/8" Copper

*Any Larger Copper Pipe Please Call For Correct Sizing  

NOTE: Iron Pipe Size is the same sizing for Iron Pipe, Black Pipe, Steel Pipe, Schedule 40, and PVC Pipe.

CLICK HERE FOR OUR HOW TO USE A PIPE CALIPER GUIDE - Highly Recommended

IF YOU HAVE ANY QUESTIONS REGARDING THE CHART ABOVE, OR YOU JUST WANT TO DOUBLE CHECK WITH US REGARDING WHAT PIPE SIZE TO ORDER, PLEASE CONTACT US BY LIVE INTERNET CHAT, EMAIL, OR GIVE US A CALL. THIS IS THE MOST FREQUENT QUESTION WE RECEIVE, SO PLEASE DO NOT BE AFRAID TO DOUBLE CHECK.