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Sacrificial magnesium anode series

1 The Executive standard

GB/T 17731-2008 Magnesium alloy sacrificial anode

SY/T0019-97 Design Code for Sacrificial Anode Protection of Buried Steel Pipelines

Sacrificial magnesium anode series-1

Sacrificial magnesium anode series-1

2 The main performance

It has a large amount of production per unit mass and high potential; it is an ideal sacrificial anode material.

Sacrificial magnesium anode series-2

Sacrificial magnesium anode series-2

3 The scope of application

It is suitable for corrosion protection of oil, gas, water supply and drainage pipelines, reservoir gates and buried pipelines in fresh water.

Sacrificial magnesium anode series-3

Sacrificial magnesium anode series-3

4 The product features

The magnesium alloy produced by our company is produced with high-quality raw materials. The anode potential is negative and the electricity generated per unit mass is large. It is an ideal sacrificial anode material. Suitable for anode protection of metal structures in soil, fresh water and sea water, such as oil and gas pipelines, storage tanks, hot water exchangers, condensers, etc.

Magnesium alloy sacrificial anodes are produced in accordance with the national standard GB/T 17731-2004 (magnesium alloy sacrificial anodes). The anodes used in pipelines also meet SY/T0019-97 (design code for sacrificial anode protection for buried steel pipelines).

The product has the following characteristics:

1) The specific gravity is small and the potential is relatively negative

2) The driving voltage to the iron is high, the current efficiency is low,

3) Specially suitable for high resistivity medium. (For resistivity greater than 100Ω.m, it is recommended to use a ribbon magnesium anode)

5 The precautions for use

1) Avoid collision with steel structure;

2) When used in the soil, it should be buried in a low-lying wet place

3) When used in the soil, the anode must be buried in a packing bag;

4) After the anode is placed in the earth pit in the dry soil area, the filling material should be fully soaked with water before the soil can be backfilled to prevent the anode from not being fully conductive.

6 The Chemical Composition

Alloy

Chemical Composition %

Alloy element

Impurity elements are not greater than

Al

Zn

Mn

Mg

Fe

Cu

Ni

Si

Ca

MGAZ63B

5.3-6.7

2.5-3.5

0.15-0.6

remainder

0.003

0.01

0.001

0.08

--

MGAZ31B

2.5-3.5

0.60-1.4

0.2-1.0

remainder

0.003

0.01

0.001

0.08

0.04

MGM1C

≤0.01

--

0.50-1.4

remainder

0.01

0.01

0.001

0.05

--

7 The Electrochemical performance

Performance

Type  Index

Open circuit potential

--V,Cu/Cu SO4

Closed circuit potential

--V,Cu/Cu SO4

Actual capacity

A. H/kg

Current efficiency

%

Dissolution

status

MGAZ63B

1.57-1.67

1.52-1.57

≥1210

≥55

Corrosion products are easy to fall off, and the surface dissolves evenly

MGAZ31B

1.57-1.67

1.47-1.57

≥1210

≥55

MGM1C

1.77-1.82

1.64-1.69

≥1100

≥50

8 Buried pipelines, outer walls of storage tanks and underground metal structures commonly used sacrificial anode models and specifications

Type

Size

Weight

KG

Length X (Upper bottom+Down Bottom) X Height  mm

MG-2

350 x (72+52) x 52

2±0.1

MG-4

350 x (95+75) x 75

4±0.2

MG-8

700 x (95+75) x 75

8±0.2

MG-11

700 x (110+90) x 88

11±0.2

MG-14

700 x (120+100) x 102

14±0.2

MG-22

700 x (150+130) x 125

22±0.2

9 The Specification of Bracelet Magnesium Alloy Sacrificial Anode

Type

Size

Weight

KG

Length X OD X ID X Thickness X

Anode spacing mm

MD-114

260 x 185 x 115 x 60

5.5

MD-59

260 x 230 x 160 x 80

7.0

MD-219

260 x 290 x 220 x 115

9.0

MD-273

260 x 344 x 274 x 140

11.0

MD-323

260 x 395 x 325 x 170

13.0

Note: The anode product can be assembled and welded according to customer requirements