How to maintain 401 stainless steel pipe fittings?

Stainless steel indicates symbols in piping drawings

Numbering and indicating method of steel

①Use the world chemical element symbols and the national symbols to indicate the chemical composition, and use the Arabic letters to indicate the composition content:

Such as: my country, Russia 12CrNi3A

②Use fixed-digit numbers to indicate steel series or numbers; such as: the United States, Japan, 300 series, 400 series, 200 series;

③ Use Latin letters and sequences to form serial numbers, only to indicate usefulness.

Our Country's Numbering Rules

①Select element symbols

②Use, Pinyin, Open Hearth Steel: P, Boiling Steel: F, Killed Steel: B, Class A Steel: A, T8: Special 8, GCr15: Ball

◆Combined steel, spring steel, such as: 20CrMnTi60SiMn, (indicate the C content in ten thousandths)

◆Stainless steel, alloy tool steel (indicates the C content in thousandths), such as: 1Cr18Ni9 one thousandth (ie 0.1%C), stainless C≤0.08% such as 0Cr18Ni9, ultra-low carbon C≤0.03% such as 0Cr17Ni13Mo

The world stainless steel marking method

The American Iron and Steel Institute uses three digits to designate various standard grades of malleable stainless steel. In between:

①Austenitic stainless steel is marked with numbers of 200 and 300 series,

② Ferritic and martensitic stainless steels are indicated by 400 series numbers. For example, some of the more general austenitic stainless steels are symbolized by 201, 304, 316 and 310,

③ Ferritic stainless steel is marked with 430 and 446, martensitic stainless steel is marked with 410, 420 and 440C, duplex (austenite-ferrite),

④Stainless steel, precipitation hardening stainless steel and high alloys with iron content less than 50% are usually named by patent or trademark.

What does stainless steel pipe fittings TP401L mean?

TP refers to American Standard. 401 is a kind of stainless steel containing molybdenum and titanium elements, and it has better corrosion resistance to substances containing chloride ions. The L in the back means that the carbon content is extremely low, and the corrosion resistance of stainless steel can be improved if the carbon content of stainless steel is reduced.

How to distinguish the types of 406 stainless steel pipe fittings?

Stainless steel pipe fittings are a general term for all kinds of stainless steel raw material pipeline connection workpieces, which can be divided into different categories according to their shapes, uses, and connection methods. It has the characteristics of easy installation, high function, and durability, and is widely used in various tube construction and installations.

Stainless steel pipe fittings can be divided into, stainless steel tee, stainless steel flange, stainless steel head weight, stainless steel elbow, stainless steel pipe cap, stainless steel head number.

How to maintain 401 stainless steel pipe fittings?

Stainless steel pipe fittings, which include: stainless steel elbow, stainless steel tee, stainless steel cross, stainless steel reducer, stainless steel pipe cap, etc. According to the connection method, it can be divided into socket type stainless steel pipe fittings, threaded stainless steel pipe fittings, flange stainless steel pipe fittings and welding Four types of stainless steel pipe fittings. Stainless steel elbows are used in places where pipe fittings turn; flanges are used for parts that connect pipes to each other, and are connected to pipe ends; stainless steel tee pipes are used in places where three pipes are assembled; stainless steel four-way pipes are used in places where four pipes are assembled Local; stainless steel reducers are used in places where two pipes of different diameters are connected. Main stainless steel raw materials: 304, 304l, 316, 316l.