Galvanized steel potable water supply and distribution pipes are commonly found with nominal pipe sizes from 3⁄8 inch (9.5 mm) to 2 inches (51 mm). It is rarely used today for new construction residential plumbing. Steel pipe has National Pipe Thread (NPT) standard tapered male threads, which connect with female tapered threads on elbows, tees, couplers, valves, and other fittings. Galvanized steel (often known simply as "galv" or "iron" in the plumbing trade) is relatively expensive, and difficult to work with due to weight and requirement of a pipe threader. It remains in common use for repair of existing "galv" systems and to satisfy building code non-combustibility requirements typically found in hotels, apartment buildings and other commercial applications. It is also extremely durable and resistant to mechanical abuse. Black lacquered steel pipe is the most widely used pipe material for fire sprinklers and natural gas.
Water systems of ancient times relied on gravity for the supply of water, using pipes or channels usually made of clay, lead, bamboo, wood, or stone. Hollowed wooden logs wrapped in steel banding were used for plumbing pipes, particularly water mains. Logs were used for water distribution in England close to 500 years ago. US cities began using hollowed logs in the late 1700s through the 1800s. Today, most plumbing supply pipe is made out of steel, copper, and plastic; most waste (also known as "soil")[21] out of steel, copper, plastic, and cast iron.[21]
Is it time to replace your home’s plumbing? If your home’s plumbing is more than 40 years old, or you are experiencing pinhole leaks or other failures, it is time to talk to Benjamin Franklin Repiping Cedar Rapids and Eastern Iowa. Our plumbers will walk you through the options and repiping process. You’ll appreciate the peace of mind that a new, code compliant, reliable plumbing system provides.
Whether you need basic plumbing maintenance, or are looking to hire a plumber to create your dream kitchen—or bath, Amazon Home Services has listings of the best professional plumbers to help get you there. Sit back, and let an expert take care of the Clogged Drain Repair, Garbage Disposal Replacement, Showerhead Replacement, Leaky Faucet, Sink Replacement, or Toilet Replacement—and watch your kitchen and bath dreams come to life.

General employment within the construction sector is sensitive to changes in the economy. But job growth for plumbers is projected to be faster than the average for all jobs. New buildings and residences are being built to comply with stricter water efficiency standards and companies housed in older structures are hoping to retrofit to use more energy-efficient systems, so opportunities are in abundance. According to the Bureau of Labor Statistics, there should be a hiring spurt of 16 percent for plumbers by the year 2026, which translates to about 75,800 new jobs.

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